-
Notifications
You must be signed in to change notification settings - Fork 0
/
2018-07-09-learn-dva-Part3.html
1294 lines (719 loc) · 61 KB
/
2018-07-09-learn-dva-Part3.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<!DOCTYPE html>
<html class="theme-next mist use-motion" lang="zh-Hans">
<head>
<meta charset="UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"/>
<meta name="theme-color" content="#222">
<script src="/lib/pace/pace.min.js?v=1.0.2"></script>
<link href="/lib/pace/pace-theme-minimal.min.css?v=1.0.2" rel="stylesheet">
<meta http-equiv="Cache-Control" content="no-transform" />
<meta http-equiv="Cache-Control" content="no-siteapp" />
<link href="/lib/fancybox/source/jquery.fancybox.css?v=2.1.5" rel="stylesheet" type="text/css" />
<link href="/lib/font-awesome/css/font-awesome.min.css?v=4.6.2" rel="stylesheet" type="text/css" />
<link href="/css/main.css?v=5.1.4" rel="stylesheet" type="text/css" />
<link rel="apple-touch-icon" sizes="180x180" href="/images/apple-touch-icon-next.png?v=5.1.4">
<link rel="icon" type="image/png" sizes="32x32" href="/images/favicon-32x32-next.png?v=5.1.4">
<link rel="icon" type="image/png" sizes="16x16" href="/images/favicon-16x16-next.png?v=5.1.4">
<link rel="mask-icon" href="/images/logo.svg?v=5.1.4" color="#222">
<meta name="keywords" content="dva," />
<link rel="alternate" href="/atom.xml" title="赖同学" type="application/atom+xml" />
<meta name="description" content="dva 学习笔记dva 学习笔记 代码 使用 Dva 开发复杂 SPA动态加载 model利用 webpack 的 require.ensure 来实现 model 的动态加载 123456789101112131415161718192021222324252627function RouterConfig(&#123; history, app&#125;) &#123; const rou">
<meta name="keywords" content="dva">
<meta property="og:type" content="article">
<meta property="og:title" content="Dva 学习笔记 (下)">
<meta property="og:url" content="http://laibh.top/2018-07-09-learn-dva-Part3.html">
<meta property="og:site_name" content="赖同学">
<meta property="og:description" content="dva 学习笔记dva 学习笔记 代码 使用 Dva 开发复杂 SPA动态加载 model利用 webpack 的 require.ensure 来实现 model 的动态加载 123456789101112131415161718192021222324252627function RouterConfig(&#123; history, app&#125;) &#123; const rou">
<meta property="og:locale" content="zh-Hans">
<meta property="og:updated_time" content="2022-03-04T10:00:38.452Z">
<meta name="twitter:card" content="summary">
<meta name="twitter:title" content="Dva 学习笔记 (下)">
<meta name="twitter:description" content="dva 学习笔记dva 学习笔记 代码 使用 Dva 开发复杂 SPA动态加载 model利用 webpack 的 require.ensure 来实现 model 的动态加载 123456789101112131415161718192021222324252627function RouterConfig(&#123; history, app&#125;) &#123; const rou">
<script type="text/javascript" id="hexo.configurations">
var NexT = window.NexT || {};
var CONFIG = {
root: '/',
scheme: 'Mist',
version: '5.1.4',
sidebar: {"position":"left","display":"post","offset":12,"b2t":false,"scrollpercent":true,"onmobile":false},
fancybox: true,
tabs: true,
motion: {"enable":true,"async":false,"transition":{"post_block":"fadeIn","post_header":"slideDownIn","post_body":"slideDownIn","coll_header":"slideLeftIn","sidebar":"slideUpIn"}},
duoshuo: {
userId: '0',
author: '博主'
},
algolia: {
applicationID: '1YNH8Y3MP9',
apiKey: '61c189facf700193dfcbb902369ce227',
indexName: 'MyBlog',
hits: {"per_page":10},
labels: {"input_placeholder":"想要找些什么呢","hits_empty":"${query} 没有被找到，再试试","hits_stats":"在 ${time} ms 查找了${hits}个结果"}
}
};
</script>
<link rel="canonical" href="http://laibh.top/2018-07-09-learn-dva-Part3.html"/>
<title>Dva 学习笔记 (下) | 赖同学</title>
</head>
<body itemscope itemtype="http://schema.org/WebPage" lang="zh-Hans">
<div class="container sidebar-position-left page-post-detail">
<div class="headband"></div>
<header id="header" class="header" itemscope itemtype="http://schema.org/WPHeader">
<div class="header-inner"><div class="site-brand-wrapper">
<div class="site-meta ">
<div class="custom-logo-site-title">
<a href="/" class="brand" rel="start">
<span class="logo-line-before"><i></i></span>
<span class="site-title">赖同学</span>
<span class="logo-line-after"><i></i></span>
</a>
</div>
<h1 class="site-subtitle" itemprop="description"></h1>
</div>
<div class="site-nav-toggle">
<button>
<span class="btn-bar"></span>
<span class="btn-bar"></span>
<span class="btn-bar"></span>
</button>
</div>
</div>
<nav class="site-nav">
<ul id="menu" class="menu">
<li class="menu-item menu-item-home">
<a href="/" rel="section">
<i class="menu-item-icon fa fa-fw fa-home"></i> <br />
首页
</a>
</li>
<li class="menu-item menu-item-tags">
<a href="/tags/" rel="section">
<i class="menu-item-icon fa fa-fw fa-tags"></i> <br />
标签
</a>
</li>
<li class="menu-item menu-item-categories">
<a href="/categories/" rel="section">
<i class="menu-item-icon fa fa-fw fa-th"></i> <br />
分类
</a>
</li>
<li class="menu-item menu-item-archives">
<a href="/archives/" rel="section">
<i class="menu-item-icon fa fa-fw fa-archive"></i> <br />
归档
</a>
</li>
<li class="menu-item menu-item-sitemap">
<a href="/sitemap.xml" rel="section">
<i class="menu-item-icon fa fa-fw fa-sitemap"></i> <br />
站点地图
</a>
</li>
<li class="menu-item menu-item-guestbook">
<a href="/guestbook" rel="section">
<i class="menu-item-icon fa fa-fw fa-comment"></i> <br />
留言
</a>
</li>
<li class="menu-item menu-item-search">
<a href="javascript:;" class="popup-trigger">
<i class="menu-item-icon fa fa-search fa-fw"></i> <br />
搜索
</a>
</li>
</ul>
<div class="site-search">
<div class="algolia-popup popup search-popup">
<div class="algolia-search">
<div class="algolia-search-input-icon">
<i class="fa fa-search"></i>
</div>
<div class="algolia-search-input" id="algolia-search-input"></div>
</div>
<div class="algolia-results">
<div id="algolia-stats"></div>
<div id="algolia-hits"></div>
<div id="algolia-pagination" class="algolia-pagination"></div>
</div>
<span class="popup-btn-close">
<i class="fa fa-times-circle"></i>
</span>
</div>
</div>
</nav>
</div>
</header>
<main id="main" class="main">
<div class="main-inner">
<div class="content-wrap">
<div id="content" class="content">
<div id="posts" class="posts-expand">
<article class="post post-type-normal" itemscope itemtype="http://schema.org/Article">
<div class="post-block">
<link itemprop="mainEntityOfPage" href="http://laibh.top/2018-07-09-learn-dva-Part3.html">
<span hidden itemprop="author" itemscope itemtype="http://schema.org/Person">
<meta itemprop="name" content="赖彬鸿">
<meta itemprop="description" content="">
<meta itemprop="image" content="/images/myPhoto.jpg">
</span>
<span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization">
<meta itemprop="name" content="赖同学">
</span>
<header class="post-header">
<h2 class="post-title" itemprop="name headline">Dva 学习笔记 (下)</h2>
<div class="post-meta">
<span class="post-time">
<span class="post-meta-item-icon">
<i class="fa fa-calendar-o"></i>
</span>
<span class="post-meta-item-text">发表于</span>
<time title="创建于" itemprop="dateCreated datePublished" datetime="2018-07-10T22:17:12+08:00">
2018-07-10
</time>
<span class="post-meta-divider">|</span>
<span class="post-meta-item-icon">
<i class="fa fa-calendar-check-o"></i>
</span>
<span class="post-meta-item-text">更新于:</span>
<time title="更新于" itemprop="dateModified" datetime="2022-03-04T18:00:38+08:00">
2022-03-04
</time>
</span>
<span class="post-category" >
<span class="post-meta-divider">|</span>
<span class="post-meta-item-icon">
<i class="fa fa-folder-o"></i>
</span>
<span class="post-meta-item-text">分类于</span>
<span itemprop="about" itemscope itemtype="http://schema.org/Thing">
<a href="/categories/react相关/" itemprop="url" rel="index">
<span itemprop="name">react相关</span>
</a>
</span>
</span>
<span id="/2018-07-09-learn-dva-Part3.html" class="leancloud_visitors" data-flag-title="Dva 学习笔记 (下)">
<span class="post-meta-divider">|</span>
<span class="post-meta-item-icon">
<i class="fa fa-eye"></i>
</span>
<span class="post-meta-item-text">阅读次数:</span>
<span class="leancloud-visitors-count"></span>
</span>
<div class="post-wordcount">
<span class="post-meta-item-icon">
<i class="fa fa-file-word-o"></i>
</span>
<span class="post-meta-item-text">字数统计:</span>
<span title="字数统计">
2,296
</span>
</div>
</div>
</header>
<div class="post-body" itemprop="articleBody">
<h1 id="dva-学习笔记"><a href="#dva-学习笔记" class="headerlink" title="dva 学习笔记"></a><code>dva</code> 学习笔记</h1><p><a href="https://github.com/LbhFront-end/learn-dva"><code>dva</code> 学习笔记 代码</a></p>
<h2 id="使用-Dva-开发复杂-SPA"><a href="#使用-Dva-开发复杂-SPA" class="headerlink" title="使用 Dva 开发复杂 SPA"></a>使用 <code>Dva</code> 开发复杂 <code>SPA</code></h2><h2 id="动态加载-model"><a href="#动态加载-model" class="headerlink" title="动态加载 model"></a>动态加载 <code>model</code></h2><p>利用 <code>webpack</code> 的 <code>require.ensure</code> 来实现 <code>model</code> 的动态加载</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br></pre></td><td class="code"><pre><span class="line">function RouterConfig({ history, app}) {</span><br><span class="line"> const routes = [</span><br><span class="line"> {</span><br><span class="line"> path: '/',</span><br><span class="line"> name: 'IndexPage',</span><br><span class="line"> getComponent(nextState, cb) {</span><br><span class="line"> require.ensure( [], (require) => {</span><br><span class="line"> registerModel(app,require('./models/dashboard'));</span><br><span class="line"> cb(null, require('./routers/IndexPage'));</span><br><span class="line"> })</span><br><span class="line"> }</span><br><span class="line"> },</span><br><span class="line"> {</span><br><span class="line"> path:'/users',</span><br><span class="line"> name:'UsersPage',</span><br><span class="line"> getComponent(nextState, cb) {</span><br><span class="line"> require.ensure(nextState, cb) {</span><br><span class="line"> require.ensure( [],(require) =>{</span><br><span class="line"> registerModel(app, require('./models/users'));</span><br><span class="line"> cb(null, require('./routes/Users'))</span><br><span class="line"> })</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> ];</span><br><span class="line"> return <Router history = { history } routes = { routes } />;</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<p>这样，在视图切换到这个路由的时候，对应的 <code>model</code> 就会被加载。同理，也可以做 <code>model</code> 的动态移除，不过，一般情况下是不需要移除的</p>
<h2 id="使用-model-共享全局信息"><a href="#使用-model-共享全局信息" class="headerlink" title="使用 model 共享全局信息"></a>使用 <code>model</code> 共享全局信息</h2><p><code>model</code> 可以动态加载，也可以移除。从这个角度看，<code>model</code> 是可以有不同生命周期的，有些可以与功能视图伴随，而有些可以贯穿整个应用的生命周期。</p>
<p>从业务逻辑看，不少场景是可以做全局的 <code>model</code> ，例如我们在路由之间的前进后退， <code>model</code> 可以用于在路由间共享数据，比较典型的，像列表页和详情页的互相转换，可以用同一份 <code>model</code> 去共享他们的数据</p>
<p>注意，如果当前应用中记载了不止一个 <code>model</code> ，在其中一个 <code>effect</code> 里做 <code>select</code> 操作，是可以获取另外一个 <code>state</code>的</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">*foo(action, { select }) {</span><br><span class="line"> const { a, b} = yield select();</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<h2 id="model-的复用"><a href="#model-的复用" class="headerlink" title="model 的复用"></a><code>model</code> 的复用</h2><p>有时候，业务上可能会遇到期望把一些外部关联比较少的 <code>model</code> 拆出来的需求，可能会拆出来一个 <code>model</code> ，然后用不同的视图容器去 <code>connect</code> 它</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">export default {</span><br><span class="line"> namespace: 'reusable',</span><br><span class="line"> state: {},</span><br><span class="line"> reducers: {},</span><br><span class="line"> effrcts: {}</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<p>所以，在业务上，可能出现的使用情况就是：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"> ContainerA <-- ModelA</span><br><span class="line"> |</span><br><span class="line"> ------------------------------</span><br><span class="line"> | |</span><br><span class="line">ContainerB <-- reusable ContainerC <-- reusable</span><br></pre></td></tr></table></figure>
<p>这里面，<code>ContainerB</code> 和 <code>ContainerC</code> 是 <code>ContainerA</code> 的下属，它们的逻辑结构一致，只是展现不同。我们可以让它们分别 <code>connect</code> 同一个 <code>model</code> ，注意，这个时候，<code>model</code> 的修改会同时影响到两个视图，因为 <code>model</code> 在 <code>state</code> 中是直接以 <code>namespace</code> 作 <code>key</code> 存放的，实际上只有一份实例</p>
<h2 id="动态扩展-model"><a href="#动态扩展-model" class="headerlink" title="动态扩展 model"></a>动态扩展 <code>model</code></h2><p>可能会遇到的业务逻辑： 几个业务视图长得差不多， <code>model</code> 也存在少量的差别</p>
<p>在这种情况下可以复用同一个 <code>model</code> ，但这么做，对于维护是一种挑战，很可能改变其中一个，对另外一个造成了影响，所以在这种情况下，扩展是比较好的选择</p>
<p>扩展要做的事情：<br>新增一些东西<br>覆盖一些原来的东西<br>根据条件动态创建一些东西 </p>
<p><code>dva</code> 中的每个 <code>model</code> ，实际上都是普通的 <code>JavaScript</code> 对象，包含 </p>
<p><code>namespace</code><br><code>state</code><br><code>reducers</code><br><code>effects</code><br><code>subscription</code></p>
<p>从这个角度上看，我们要新增或者覆盖的一些东西，都会比较容易。比如使用 <code>Object.assign</code> 来进行对象的复制属性，就可以把新的内容添加或者覆盖到原有的对象上。</p>
<p>注意这里有两级，<code>model</code> 结构中的 <code>state</code>，<code>reducers</code>，<code>effects</code>，<code>subscriptions</code>都是对象结构，需要分别在这一级去做 <code>assign</code>。</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line">function reacteModel(options) {</span><br><span class="line"> const { namespace, param } = options;</span><br><span class="line"> return {</span><br><span class="line"> namespace: `demo${namespace}`,</span><br><span class="line"> states: {},</span><br><span class="line"> reducers: {},</span><br><span class="line"> effects: {</span><br><span class="line"> *foo() {</span><br><span class="line"> // 这里可以根据param来确定下面这个call的参数</span><br><span class="line"> yield call()</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">const modelA = createModel({ namespace: 'A', param :{ type: 'A'}});</span><br><span class="line">const modelA = createModel({ namespace: 'B', param :{ type: 'B'}});</span><br></pre></td></tr></table></figure>
<h2 id="长流程的业务逻辑"><a href="#长流程的业务逻辑" class="headerlink" title="长流程的业务逻辑"></a>长流程的业务逻辑</h2><p>例如复杂的表单提交，中间会需要去发起多种对视图状态的操作</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br></pre></td><td class="code"><pre><span class="line">*submit(action, {put,call,select}) {</span><br><span class="line"> const formData = yield select(state => {</span><br><span class="line"> const buyModel = state.buy;</span><br><span class="line"> const context = state.context;</span><br><span class="line"> const { stock } = buyModel;</span><br><span class="line"> return {</span><br><span class="line"> uuid: context.uuid,</span><br><span class="line"> market: stock && stock.code,</span><br><span class="line"> stockName: stock && stock.name,</span><br><span class="line"> price: String(buyModel.price),</span><br><span class="line"></span><br><span class="line"> //委托数量</span><br><span class="line"> entrustAmount: String(buyModel.count),</span><br><span class="line"> totalBalance: buyModel.totalBalance,</span><br><span class="line"> availableTzbBanlance: buyModel.availableTzbBalance,</span><br><span class="line"> availableDepositBalance: buyModel.availableDepositBalance,</span><br><span class="line"> }</span><br><span class="line"> });</span><br><span class="line"></span><br><span class="line"> const result = yield call(post, '/h5/entrust_buy',formDate, {loading: true});</span><br><span class="line"></span><br><span class="line"> if(result.success){</span><br><span class="line"> toast({</span><br><span class="line"> type: 'success',</span><br><span class="line"> content: '委托已受理',</span><br><span class="line"> });</span><br><span class="line"></span><br><span class="line"> // 成功之后再获取一次现价，并填入</span><br><span class="line"> // yield put({type: 'fetchQuotation', payload: stock});</span><br><span class="line"> yield put({ type: 'entrustNoChange', payload: result.result && result.result.entrustNo });</span><br><span class="line"></span><br><span class="line"> // 清空输入框内容</span><br><span class="line"> yield put({ type: 'searchQueryChange', value: '' });</span><br><span class="line"></span><br><span class="line"> // 403时，需要验证密码再重新提交</span><br><span class="line"> if (!result.success && result.resultCode === 403) {</span><br><span class="line"> yield put({ type: 'checkPassword', payload: {} });</span><br><span class="line"> return;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> // 失败之后也需要更新投资宝和保证金金额</span><br><span class="line"> if (result.result) {</span><br><span class="line"> yield put({ type: 'balanceChange', payload: result.result });</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> // 重新获取最新可撤单列表</span><br><span class="line"> yield put({ type: 'fetchRevockList' });</span><br><span class="line"></span><br><span class="line"> // 返回的结果里面如果有uuid, 用新的uuid替换</span><br><span class="line"> if (result.uuid) {</span><br><span class="line"> yield put({ type: 'context/updateUuid', payload: result.uuid });</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<p>在一个 <code>effect</code> 中可以使用多个 <code>put</code> 来分别调用 <code>reducer</code> 来更新状态<br>存在另外一些流程，在 <code>effect</code> 中可能会存在多个异步的服务调用，比如说，要调用一次服务端的验证，成功之后再去提交数据，这时候在一个 <code>effect</code> 中就会存在多个 <code>call</code> 操作了</p>
<h2 id="使用-take-操作进行事件监听"><a href="#使用-take-操作进行事件监听" class="headerlink" title="使用 take 操作进行事件监听"></a>使用 <code>take</code> 操作进行事件监听</h2><p>一个流程的变动，需要扩散到若干其他 <code>model</code> 中，在 <code>redux-sage</code> 中提供了 <code>take</code> 和 <code>takeLatest</code> 这两个操作， <code>dva</code> 是 <code>redux-saga</code> 的封装，也是可以用这种操作</p>
<p>假设我们有一个事件处理的代码 </p>
<blockquote>
<p>someSource.on( ‘click’, event => doSomething(event))</p>
</blockquote>
<p>这段代码转成 <code>generator</code> 来表达，就是下面的这个形式</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">function* sage() {</span><br><span class="line"> while(true) {</span><br><span class="line"> const event = yield take('click');</span><br><span class="line"> doSomething(event)</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<p>我们 可以在 <code>dva</code> 中使用 <code>take</code> 操作来监听 <code>action</code></p>
<h2 id="多任务调度"><a href="#多任务调度" class="headerlink" title="多任务调度"></a>多任务调度</h2><p>上述大多都是串行执行方式，这是业务中最常见的多任务执行方式，只需逐个 <code>yield call</code> 就可以了</p>
<p>有时候我们可能希望多个任务以外一些方式执行</p>
<p>并行： 若干个任务之间不存在依赖关系，并且后续操作对它们的结果无依赖<br>竞争： 若干个任务之间，只要有一个执行完成，就进入下一个环节<br>子任务： 若干个任务，并行执行，但必须全部做完之后，下一个环节才继续执行</p>
<h2 id="任务的并执行"><a href="#任务的并执行" class="headerlink" title="任务的并执行"></a>任务的并执行</h2><p>可以通过以下方式</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">const [result1, result2] = yield [</span><br><span class="line"> call(service1, param1),</span><br><span class="line"> call(service2, param2)</span><br><span class="line">]</span><br></pre></td></tr></table></figure>
<p>把多个要并行执行的东西放在一个数组里，就可以并行执行，等所有的都结束后进行下一个环节，类似 <code>promise.all</code> 操作，一般有些集成界面，比如 <code>dashboard</code> ，其中各组件之间业务的管理较小，就可以用这种方式去分别加载数据，此时，整体加载时间只取决于时间最长的那个</p>
<p>如果把 <code>yield []</code> 误写成 <code>yield* []</code> 就会顺序执行</p>
<h2 id="任务的竞争"><a href="#任务的竞争" class="headerlink" title="任务的竞争"></a>任务的竞争</h2><p>多任务的竞争关系，可以通过以下方式</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line">const { data, timeout } = yield race({</span><br><span class="line"> data: call(server, 'some data'),</span><br><span class="line"> timeout: call(delay, 1000)</span><br><span class="line">});</span><br><span class="line"></span><br><span class="line">if(data){</span><br><span class="line"> put({ type:'DATA_RECEIVED', data});</span><br><span class="line">}else{</span><br><span class="line"> put({ type:'TIMEOUT_ERROR'});</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<h2 id="跨-model-的通信"><a href="#跨-model-的通信" class="headerlink" title="跨 model 的通信"></a>跨 <code>model</code> 的通信</h2><p>在业务复杂的情况下，我们可能会对 <code>model</code> 进行拆分，往往又会遇到一些比较复杂的事情 </p>
<p>一个流程贯穿整个 <code>model</code> </p>
<p>父容器A，子容器B，二者各自 <code>connect</code> 了不同的 <code>model A</code> 和 <code>B</code><br>父容器中有一个操作，分三个步骤：<br><code>model A</code> 中某个 <code>effect</code> 处理第一步<br><code>call model B</code> 中的某个 <code>effect</code> 去处理第二步<br>第二步结束后，再返回 <code>model A</code> 中做第三步<br>在 <code>dva</code> 中，可以用 <code>namespace</code> 去指定接受 <code>action</code> 的 `model ，所以可以通过类似这样的方式去组合：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">yield call({ type: 'a/foo' });</span><br><span class="line">yield call({ type: 'b/foo' });</span><br><span class="line">yield call({ type: 'a/bar' });</span><br></pre></td></tr></table></figure>
<p>甚至，还可以利用 <code>take</code> 命令，在另外一个 <code>model</code> 的某个 <code>effect</code> 中插入逻辑：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line">*effectA() {</span><br><span class="line"> yield call(service1);</span><br><span class="line"> yield put({ type: 'service1Success' });</span><br><span class="line"> // 如果我们复用这个effect，但要在这里加一件事，怎么办？</span><br><span class="line"> yield call(service2);</span><br><span class="line"> yield put({ type: 'service2Success' });</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<p>可以利用之前我们说的 <code>take</code> 命令：</p>
<blockquote>
<p>yield take(‘a/service1Success’);</p>
</blockquote>
<p>这样，可以在外部往里面添加一个并行操作，通过这样的组合可以处理一些组合流程。但实际情况下，我们可能要处理的不仅仅是 <code>effect</code> ，很可能视图组件中还存在后续逻辑，在某个 <code>action</code> 执行之后，还需要再做某些事情。</p>
<p>比如：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">yield call({ type: 'a/foo' });</span><br><span class="line">yield call({ type: 'b/foo' });</span><br><span class="line">// 如果这里是要在组件里面做某些事情，怎么办？</span><br></pre></td></tr></table></figure>
<p>可以利用一些特殊手段把流程延伸出来到组件里。比如说，我们通常在组件中 <code>dispatch</code> 一个 <code>action</code> 的时候，不会处理后续事情，但可以修改这个过程：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">new Promise((resolve, reject) => {</span><br><span class="line"> dispatch({ type: 'reusable/addLog', payload: { data: 9527, resolve, reject } });</span><br><span class="line">})</span><br><span class="line">.then((data) => {</span><br><span class="line"> console.log(`after a long time, ${data} returns`);</span><br><span class="line">});</span><br></pre></td></tr></table></figure>
<p>注意这里，我们是把 <code>resolve</code> 和 <code>reject</code> 传到 <code>action</code> 里面了，所以，只需在 <code>effect</code> 里面这样处理：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line">try {</span><br><span class="line"> const result = yield call(service1);</span><br><span class="line"> yield put({ type: 'service1Success', payload: result });</span><br><span class="line"> resolve(result);</span><br><span class="line">}</span><br><span class="line">catch (error) {</span><br><span class="line"> yield put({ type: 'service1Fail', error });</span><br><span class="line"> reject(ex);</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<p>这样，就实现了跨越组件、模型的复杂的长流程的调用。</p>
</div>
<div>
<ul class="post-copyright">
<li class="post-copyright-author">
<strong>本文作者：</strong>
赖彬鸿
</li>
<li class="post-copyright-link">
<strong>本文链接：</strong>
<a href="http://laibh.top/2018-07-09-learn-dva-Part3.html" title="Dva 学习笔记 (下)">http://laibh.top/2018-07-09-learn-dva-Part3.html</a>
</li>
<li class="post-copyright-license">
<strong>版权声明： </strong>
本博客所有文章除特别声明外，均采用 <a href="https://creativecommons.org/licenses/by-nc-sa/3.0/" rel="external nofollow" target="_blank">CC BY-NC-SA 3.0</a> 许可协议。转载请注明出处！
</li>
</ul>
</div>
<footer class="post-footer">
<div class="post-tags">
<a href="/tags/dva/" <i class="fa fa-tag"></i> dva</a>
</div>
<div class="post-nav">
<div class="post-nav-next post-nav-item">
<a href="/2018-07-09-learn-dva-part2.html" rel="next" title="Dva 学习笔记 (中)">
<i class="fa fa-chevron-left"></i> Dva 学习笔记 (中)
</a>
</div>
<span class="post-nav-divider"></span>
<div class="post-nav-prev post-nav-item">
<a href="/2018-08-09-read-图解HTTP-Part1.html" rel="prev" title="深入浅出HTTP，从开始到放弃（第一章）—— 了解Web网络基础">
深入浅出HTTP，从开始到放弃（第一章）—— 了解Web网络基础 <i class="fa fa-chevron-right"></i>
</a>
</div>
</div>
</footer>
</div>
</article>
<div class="post-spread">
<script>
window._bd_share_config = {
"common": {
"bdText": "",
"bdMini": "1",
"bdMiniList": false,
"bdPic": ""
},
"image": {
"viewList": ["tsina", "douban", "sqq", "qzone", "weixin", "twi", "fbook"],
"viewText": "分享到：",
"viewSize": "16"
},
"slide": {
"bdImg": "5",
"bdPos": "left",
"bdTop": "100"
}
}
</script>
<script>
with(document)0[(getElementsByTagName('head')[0]||body).appendChild(createElement('script')).src='/static/api/js/share.js?v=89860593.js?'+~(-new Date()/36e5)];;
</script>
</div>
</div>
</div>
<div class="comments" id="comments">
<div id="lv-container" data-id="city" data-uid="MTAyMC8zOTcwMy8xNjIzMA"></div>
</div>
</div>
<div class="sidebar-toggle">
<div class="sidebar-toggle-line-wrap">
<span class="sidebar-toggle-line sidebar-toggle-line-first"></span>
<span class="sidebar-toggle-line sidebar-toggle-line-middle"></span>
<span class="sidebar-toggle-line sidebar-toggle-line-last"></span>
</div>
</div>
<aside id="sidebar" class="sidebar">
<div class="sidebar-inner">
<ul class="sidebar-nav motion-element">
<li class="sidebar-nav-toc sidebar-nav-active" data-target="post-toc-wrap">
文章目录
</li>
<li class="sidebar-nav-overview" data-target="site-overview-wrap">
站点概览
</li>
</ul>
<section class="site-overview-wrap sidebar-panel">
<div class="site-overview">
<div class="site-author motion-element" itemprop="author" itemscope itemtype="http://schema.org/Person">
<img class="site-author-image" itemprop="image"
src="/images/myPhoto.jpg"
alt="赖彬鸿" />
<p class="site-author-name" itemprop="name">赖彬鸿</p>
<p class="site-description motion-element" itemprop="description"></p>
</div>
<nav class="site-state motion-element">
<div class="site-state-item site-state-posts">
<a href="/archives/">
<span class="site-state-item-count">135</span>
<span class="site-state-item-name">日志</span>
</a>
</div>
<div class="site-state-item site-state-categories">
<a href="/categories/index.html">
<span class="site-state-item-count">32</span>
<span class="site-state-item-name">分类</span>
</a>
</div>
<div class="site-state-item site-state-tags">
<a href="/tags/index.html">
<span class="site-state-item-count">40</span>
<span class="site-state-item-name">标签</span>
</a>
</div>
</nav>
<div class="feed-link motion-element">
<a href="/atom.xml" rel="alternate">
<i class="fa fa-rss"></i>
RSS
</a>
</div>
<div class="links-of-author motion-element">
<span class="links-of-author-item">
<a href="https://github.com/LbhFront-end" target="_blank" title="GitHub">
<i class="fa fa-fw fa-github"></i>GitHub</a>
</span>
<span class="links-of-author-item">
<a href="https://www.cnblogs.com/lbh2018/" target="_blank" title="博客园">
<i class="fa fa-fw fa-globe"></i>博客园</a>
</span>
<span class="links-of-author-item">
<a href="https://yq.aliyun.com/users/1802204154913774?spm=a2c4e.11153940.blogcont662526.4.6c0a34f6E2lR5o" target="_blank" title="云栖">
<i class="fa fa-fw fa-globe"></i>云栖</a>
</span>
<span class="links-of-author-item">
<a href="mailto:544289495@qq.com" target="_blank" title="E-Mail">
<i class="fa fa-fw fa-envelope"></i>E-Mail</a>
</span>
<span class="links-of-author-item">
<a href="tencent://AddContact/?fromId=45&fromSubId=1&subcmd=all&uin=544289495&website=www.oicqzone.com" target="_blank" title="QQ">
<i class="fa fa-fw fa-qq"></i>QQ</a>
</span>
<span class="links-of-author-item">
<a href="https://www.google.com.hk/search?safe=strict&source=hp&ei=JtLCXIriJ8G4-gS_-4qABQ&q=site%3Alaibh.top&btnK=Google+%E6%90%9C%E7%B4%A2&oq=site%3Alaibh.top&gs_l=psy-ab.3...1158.6834..7051...5.0..1.246.3720.2-17......0....1..gws-wiz.....0..0j0i10.rJMUHvdrbds" target="_blank" title="Google">
<i class="fa fa-fw fa-google"></i>Google</a>
</span>
</div>
<iframe frameborder="no" border="0" marginwidth="0" marginheight="0" width=330 height=90 src="//music.163.com/outchain/player?type=0&id=2353471182&auto=0&height=90"></iframe>
<div class="links-of-blogroll motion-element links-of-blogroll-inline">
<div class="links-of-blogroll-title">
<i class="fa fa-fw fa-link"></i>
友情链接
</div>
<ul class="links-of-blogroll-list">
<li class="links-of-blogroll-item">
<a href="http://www.chjtx.com/JRoll/" title="醉萝卜" target="_blank">醉萝卜</a>
</li>
<li class="links-of-blogroll-item">
<a href="http://hzd.plus/" title="Zhendong" target="_blank">Zhendong</a>
</li>
<li class="links-of-blogroll-item">
<a href="https://www.cnblogs.com/cnyball" title="cnyballk" target="_blank">cnyballk</a>
</li>
<li class="links-of-blogroll-item">
<a href="http://johnzz.top/" title="John" target="_blank">John</a>
</li>
<li class="links-of-blogroll-item">
<a href="https://xiaojun1994.top/" title="xiaojun1994" target="_blank">xiaojun1994</a>
</li>
<li class="links-of-blogroll-item">
<a href="https://me.ursb.me" title="Airing" target="_blank">Airing</a>
</li>
<li class="links-of-blogroll-item">
<a href="https://www.iyouhun.com" title="游魂" target="_blank">游魂</a>
</li>
<li class="links-of-blogroll-item">
<a href="https://icoty.github.io/" title="荒野之萍" target="_blank">荒野之萍</a>
</li>
<li class="links-of-blogroll-item">
<a href="https://im-one.github.io/" title="imOne" target="_blank">imOne</a>
</li>
<li class="links-of-blogroll-item">
<a href="http://blog.hourxu.com/" title="Ambre" target="_blank">Ambre</a>
</li>
<li class="links-of-blogroll-item">
<a href="http://www.huyujs.com" title="胡雨" target="_blank">胡雨</a>
</li>
<li class="links-of-blogroll-item">
<a href="https://www.andou.live" title="安逗" target="_blank">安逗</a>
</li>
<li class="links-of-blogroll-item">
<a href="https://www.jianshu.com/u/701a8bbf4f7e" title="陈健斌" target="_blank">陈健斌</a>
</li>
<li class="links-of-blogroll-item">
<a href="https://itobys.github.io/" title="汤姆Tom酱" target="_blank">汤姆Tom酱</a>
</li>
<li class="links-of-blogroll-item">
<a href="https://breeze2.github.io/blog/" title="林毅锋" target="_blank">林毅锋</a>
</li>
<li class="links-of-blogroll-item">
<a href="http://www.qzroc.com/" title="大鹏博客" target="_blank">大鹏博客</a>
</li>
<li class="links-of-blogroll-item">
<a href="https://lyreal666.com/" title="余腾靖的博客" target="_blank">余腾靖的博客</a>
</li>
<li class="links-of-blogroll-item">
<a href="https://buzuosheng.com/" title="不作声" target="_blank">不作声</a>
</li>
<li class="links-of-blogroll-item">
<a href="https://www.baidu.com/s?ie=UTF-8&wd=site%3Alaibh.top" title="百度" target="_blank">百度</a>
</li>
<li class="links-of-blogroll-item">
<a href="https://www.google.com.hk/search?safe=strict&source=hp&ei=zXdWXfemLJbO0PEP8qyXyA0&q=site%3Alaibh.top&oq=site%3Alaibh.top&gs_l=psy-ab.3...580.8501..8767...0.0..0.397.934.2-1j2......0....2j1..gws-wiz.QESXfWGadT0&ved=0ahUKEwi3wbusiofkAhUWJzQIHXLWBdkQ4dUDCAU&uact=5" title="谷歌" target="_blank">谷歌</a>
</li>
</ul>
</div>
</div>
</section>
<!--noindex-->
<section class="post-toc-wrap motion-element sidebar-panel sidebar-panel-active">
<div class="post-toc">
<div class="post-toc-content"><ol class="nav"><li class="nav-item nav-level-1"><a class="nav-link" href="#dva-学习笔记"><span class="nav-number">1.</span> <span class="nav-text">dva 学习笔记</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#使用-Dva-开发复杂-SPA"><span class="nav-number">1.1.</span> <span class="nav-text">使用 Dva 开发复杂 SPA</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#动态加载-model"><span class="nav-number">1.2.</span> <span class="nav-text">动态加载 model</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#使用-model-共享全局信息"><span class="nav-number">1.3.</span> <span class="nav-text">使用 model 共享全局信息</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#model-的复用"><span class="nav-number">1.4.</span> <span class="nav-text">model 的复用</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#动态扩展-model"><span class="nav-number">1.5.</span> <span class="nav-text">动态扩展 model</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#长流程的业务逻辑"><span class="nav-number">1.6.</span> <span class="nav-text">长流程的业务逻辑</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#使用-take-操作进行事件监听"><span class="nav-number">1.7.</span> <span class="nav-text">使用 take 操作进行事件监听</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#多任务调度"><span class="nav-number">1.8.</span> <span class="nav-text">多任务调度</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#任务的并执行"><span class="nav-number">1.9.</span> <span class="nav-text">任务的并执行</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#任务的竞争"><span class="nav-number">1.10.</span> <span class="nav-text">任务的竞争</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#跨-model-的通信"><span class="nav-number">1.11.</span> <span class="nav-text">跨 model 的通信</span></a></li></ol></li></ol></div>
</div>
</section>
<!--/noindex-->
</div>
</aside>
</div>
</main>
<footer id="footer" class="footer">
<div class="footer-inner">
<script async src="//busuanzi.ibruce.info/busuanzi/2.3/busuanzi.pure.mini.js"></script>
<div class="copyright">© 2018 — <span itemprop="copyrightYear">2022</span>
<span class="with-love">
<i class="fa fa-heart throb" style="color: #d43f57;"></i>
</span>
<span class="author" itemprop="copyrightHolder">赖彬鸿</span>
</div>
<script src='https://unpkg.com/mermaid@7.1.2/dist/mermaid.min.js'></script>
<script>
if (window.mermaid) {
mermaid.initialize("");
}
</script>
<!--
<div class="powered-by">由 <a class="theme-link" target="_blank" href="https://hexo.io">Hexo</a> 强力驱动</div>
<span class="post-meta-divider">|</span>
<div class="theme-info">主题 — <a class="theme-link" target="_blank" href="https://github.com/iissnan/hexo-theme-next">NexT.Mist</a> v5.1.4</div>
-->
<div>
<span id="busuanzi_container_site_pv" title="访问量">
<i class="fa fa fa-eye"></i> <span id="busuanzi_value_site_pv"></span>
</span>
<span id="busuanzi_container_site_uv" title="访问人数">
<i class="fa fa-user"></i> <span id="busuanzi_value_site_uv"></span>
</span>
<span class="post-count" title="博客总字数"><i class="fa fa-pagelines" aria-hidden="true"></i>745.9k</span>
</div>
<i class="fa fa-shield" aria-hidden="true" title="本站安全运行时间"></i> <span id="timeDate">载入天数...</span><span id="times">载入时分秒...</span>
<script>
var now = new Date();
function createtime() {
var grt= new Date("01/29/2018 09:47:04");//此处修改你的建站时间或者网站上线时间
now.setTime(now.getTime()+250);
days = (now - grt ) / 1000 / 60 / 60 / 24; dnum = Math.floor(days);
hours = (now - grt ) / 1000 / 60 / 60 - (24 * dnum); hnum = Math.floor(hours);
if(String(hnum).length ==1 ){hnum = "0" + hnum;} minutes = (now - grt ) / 1000 /60 - (24 * 60 * dnum) - (60 * hnum);
mnum = Math.floor(minutes); if(String(mnum).length ==1 ){mnum = "0" + mnum;}
seconds = (now - grt ) / 1000 - (24 * 60 * 60 * dnum) - (60 * 60 * hnum) - (60 * mnum);
snum = Math.round(seconds);
if(String(snum).length ==1 ){snum = "0" + snum;}
document.getElementById("timeDate").innerHTML = dnum+" 天 ";
document.getElementById("times").innerHTML = hnum + " 小时 " + mnum + " 分 " + snum + " 秒";
}
setInterval("createtime()",250);
</script>
</div>
</footer>
<div class="back-to-top">
<i class="fa fa-arrow-up"></i>
<span id="scrollpercent"><span>0</span>%</span>
</div>
</div>
<script type="text/javascript">
if (Object.prototype.toString.call(window.Promise) !== '[object Function]') {
window.Promise = null;
}
</script>