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flashcard.html
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flashcard.html
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<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
<!-- 腾讯云Cloudbase-->
<script src="https://imgcache.qq.com/qcloud/tcbjs/1.3.5/tcb.js"></script>
<!-- Vue -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.min.js"></script>
<!-- VantUI -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/vant@2.9/lib/index.css"/>
<script src="https://cdn.jsdelivr.net/npm/vant@2.9/lib/vant.min.js"></script>
<!-- Axios-->
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.19.2/axios.min.js"></script>
<!-- MomentJS-->
<script src="https://cdn.bootcdn.net/ajax/libs/moment.js/2.27.0/moment.min.js"></script>
<title>复习软件</title>
<style>
#app {
text-align: center;
margin: 4em;
}
.van-tabs__content {
padding: 1em;
}
.mark_btn_wrapper {
margin: 1em;
display: flex;
justify-content: space-around;
}
.mark_btn_wrapper > .van-button {
width: 8em;
}
.save_btn {
margin: 1em;
width: 10em;
}
.card_item {
text-align: left;
border-top: 1px lightgray solid;
padding: 10px;
}
.card_item:last-child {
border-bottom: 1px lightgray solid;
}
.card_item > div.back {
color: gray;
}
.card_item_back {
color: gray;
}
.desc {
font-size: small;
color: gray;
}
.rev_panel .card_front {
height: 5em;
line-height: 5em;
font-size: 1.5em;
border: 1px lightgray dashed;
}
.rev_panel .card_back {
margin-top: 10px;
border: 1px lightgray dashed;
height: 5em;
line-height: 5em;
font-size: 1.5em;
vertical-align: center;
}
</style>
</head>
<body>
<div id="app">
<div v-show="!is_loaded" class="app_loading">loading...</div>
<van-tabs type="card" v-model:active="activeTab" v-show="is_loaded">
<van-tab name="tab1" title="新增卡片">
<van-cell-group>
<van-field v-model="new_front" label="正面" type="textarea" placeholder="请输入卡片正面"
:autosize="{ maxHeight: 100, minHeight: 50 }"/>
</van-cell-group>
<van-cell-group>
<van-field v-model="new_back" label="背面" type="textarea" placeholder="请输入卡片背面"
:autosize="{ maxHeight: 100, minHeight: 50 }"/>
</van-cell-group>
<van-button class="save_btn" type="primary" @click="addNewCard" :loading="is_saving">保存</van-button>
</van-tab>
<van-tab name="tab2" :title="todayRevTabName">
<div v-if="rev_list.length===0">
今日无需复习
</div>
<div v-else class="rev_panel">
<div class="card_front">
<span>{{rev_list[0].front}}</span>
</div>
<div class="card_back">
{{isAnswerShowing ? rev_list[0].back : ""}}
</div>
<div v-show="!isAnswerShowing" class="mark_btn_wrapper">
<van-button plain type="info" @click="isAnswerShowing=true">显示答案</van-button>
</div>
<div v-show="isAnswerShowing" class="mark_btn_wrapper">
<van-button :loading="is_updating" type="warning" @click="onMark(0.3)">忘记</van-button>
<van-button :loading="is_updating" type="default" @click="onMark(0.6)">记得</van-button>
<van-button :loading="is_updating" type="primary" @click="onMark(0.8)">熟悉</van-button>
</div>
</div>
</van-tab>
<van-tab name="tab3" :title="allCardsTabName">
<div v-for="i in all_items" :key="i._id" class="card_item">
<div>{{i.front}}</div>
<div class="card_item_back">{{i.back}}</div>
<div class="desc">
上次复习日期：{{formatYMDHMS(i.last_rev_at)}}，
下次复习日期:{{formatYMDHMS(i.next_rev_at)}}
</div>
</div>
</van-tab>
</van-tabs>
</div>
<script>
const ONE_DAY_MS = 3600 * 24 * 1000
new Vue({
el: '#app',
data: {
is_loaded: false,//是否完成初始化
//目前展示的Tab
activeTab: "tab2",
//新建卡片：
new_front: "", //卡片正面内容
new_back: "",//卡片背面内容
is_saving: false,//是否正在保存
//今日复习:
rev_list: [], //复习列表
isAnswerShowing: false, // 卡片背面是否可见
is_updating: false,//是否正在更新复习日期
//所有卡片:
all_items: [],
},
created() {
this.init()
},
computed: {
todayRevTabName() {
if (this.rev_list.length === 0) {
return "今日复习"
}
return `今日复习(${this.rev_list.length})`
},
allCardsTabName() {
if (this.all_items.length === 0) {
return "所有卡片"
}
return `所有卡片(${this.all_items.length})`
}
},
methods: {
async init() {
const backend = tcb.init({
env: "test-4gn3sgio58b74112" //环境ID
});
//登陆后端
await backend.auth().signInAnonymously()
//查询所有卡片
const db = backend.database()
const collection = db.collection("items")
this.collection = collection
const {data} = await collection.get()
this.all_items = data
//过滤今日需要复习内容
const now = new Date().getTime()
this.rev_list = this.all_items.filter(i => i.next_rev_at < now)
this.is_loaded = true
console.log("卡片总数:", this.all_items.length, "今日复习:", this.rev_list.length)
},
async addNewCard() {
//字段完整性检查
if (!this.new_front || !this.new_back) {
this.$notify({type: 'warning', message: '字段不足'});
return
}
//创建新的条目
const item = {
"front": this.new_front,
"back": this.new_back,
"history": [],
//为方便演示，将next_rev_at设置为当前时刻,last_rev_at设置为昨天
"last_rev_at": new Date().getTime() - ONE_DAY_MS,
"next_rev_at": new Date().getTime()
}
//存储到数据库
this.is_saving = true
const result = await this.collection.add(item)
item._id = result.id
this.all_items.push(item)
this.$notify({type: 'success', message: '添加成功'});
if (item.next_rev_at <= new Date().getTime()) {
this.rev_list.push(item)
}
//清空输入内容
this.new_front = null
this.new_back = null
this.is_saving = false
},
async onMark(recall) {
const item = this.rev_list[0]
//计算复习间隔天数
const now = new Date().getTime()
const real_interval = (now - item.last_rev_at) / ONE_DAY_MS
//生成复习日志
const new_log = [real_interval, recall]
//更新复习历史
item.history.push(new_log)
const the_form = {
"logs": item.history,
"aim_recall": 0.8,
}
//调用遗忘算法API获得下次复习间隔
this.is_updating = true
const t1 = new Date().getTime()
const response = await axios.post("https://srapi.huacishu.com/m1/next_interval", the_form)
const interval_day = response.data.interval
const time_cost = (new Date().getTime() - t1) / 1000
console.log(the_form, "next_interval:", interval_day, "time_cost", time_cost)
//更新卡片复习信息
item.next_rev_at = now + interval_day * ONE_DAY_MS
item.last_rev_at = now
//更新到数据库
await this.collection.doc(item._id).update({
"history": item.history,
"last_rev_at": item.last_rev_at,
"next_rev_at": item.next_rev_at
})
this.$notify({type: 'success', message: '更新成功'});
this.is_updating = false
//切换到下一个卡片
this.isAnswerShowing = false
this.rev_list.splice(0, 1)
},
formatYMDHMS(date_ms) {
const pattern = 'YYYY-M-D'
const date = new Date(date_ms)
return moment(date).format(pattern)
}
}
})
</script>
</body>
</html>