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vcode.html
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vcode.html
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<!DOCTYPE html><html class="theme-next pisces use-motion" lang="zh-CN"><head><meta name="generator" content="Hexo 3.9.0"><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=2"><meta name="theme-color" content="#222"><link rel="apple-touch-icon" sizes="180x180" href="/images/icons/favicon-48.png?v=6.7.0"><link rel="icon" type="image/png" sizes="32x32" href="/images/icons/favicon-32.png?v=6.7.0"><link rel="icon" type="image/png" sizes="16x16" href="/images/icons/favicon-16.png?v=6.7.0"><link rel="mask-icon" href="/images/icons/logo.svg?v=6.7.0" color="#222"><link rel="alternate" href="/atom.xml" title="菠菜眾長" type="application/atom+xml"><meta http-equiv="Cache-Control" content="no-transform"><meta http-equiv="Cache-Control" content="no-siteapp"><link href="/lib/fancybox/source/jquery.fancybox.css" rel="stylesheet" type="text/css"><link 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itemprop="mainEntityOfPage" href="https://lruihao.cn/posts/vcode.html"><span hidden itemprop="author" itemscope itemtype="http://schema.org/Person"><meta itemprop="name" content="李瑞豪"><meta itemprop="description" content="从ACM到Web，分享程序、技巧、干货，记录心情、学习、成长！"><meta itemprop="image" content="/images/avatar.png"></span><span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization"><meta itemprop="name" content="菠菜眾長"></span><header class="post-header"><h2 class="post-title" itemprop="name headline">js验证码<a href="https://github.com/Lruihao/lruihao.github.io/tree/hexo/source/_posts/vcode.md" class="post-edit-link" title="编辑" rel="external nofollow noopener noreferrer" target="_blank"><i class="fa fa-pencil"></i></a></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="创建时间：2019-03-04 20:53:09" itemprop="dateCreated datePublished" datetime="2019-03-04T20:53:09+08:00">2019-03-04</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/Frontend/" itemprop="url" rel="index"><span itemprop="name">Frontend</span></a></span> ， <span itemprop="about" itemscope itemtype="http://schema.org/Thing"><a href="/categories/Frontend/JavaScript/" itemprop="url" rel="index"><span itemprop="name">JavaScript</span></a></span> </span><span class="post-comments-count"><span class="post-meta-divider">|</span> <span class="post-meta-item-icon"><i class="fa fa-comment-o"></i> </span><span class="post-meta-item-text">评论数： </span><a href="/posts/vcode.html#comments" itemprop="discussionUrl"><span class="post-comments-count valine-comment-count" data-xid="/posts/vcode.html" itemprop="commentCount"></span> </a></span><span id="/posts/vcode.html" class="leancloud_visitors" data-flag-title="js验证码"><span class="post-meta-divider">|</span> <span title="阅读次数"><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></span><div class="post-symbolscount"><span class="post-meta-divider">|</span> <span class="post-meta-item-icon"><i class="fa fa-file-word-o"></i> </span><span class="post-meta-item-text">本文字数：</span> <span title="本文字数">362</span> <span class="post-meta-divider">|</span> <span class="post-meta-item-icon"><i class="fa fa-clock-o"></i> </span><span class="post-meta-item-text">阅读时长 ≈</span> <span title="阅读时长">1 分钟</span></div></div></header><div class="post-body" itemprop="articleBody"><style type="text/css">#code{font-family:Arial;font-style:italic;font-weight:700;border:2px solid #ddd;letter-spacing:9px;color:#00f;font-size:15px}</style><script type="text/javascript">var code;function createCode(){code="";for(var e=document.getElementById("code"),a=new Array("人","徒","知","枯","坐","息","思","为","进","德","之","功","殊","不","知","上","达","之","士","圆","通","定","慧","体","用","双","修","即","动","而","静","虽","撄","而","宁"),o=0;o<4;o++){var t=Math.floor(35*Math.random());code+=a[t]}e.value=code}function validate(){var e=document.getElementById("input"),a=e.value.toUpperCase();0==a?alert("请输入验证码"):a!=code?(e.value="",alert("验证码不正确，请重新输入"),createCode()):(e.value="",alert("验证码正确！"))}window.onload=function(){createCode()}</script><div align="center"><br><input type="text" id="input"> <input type="button" id="code" onclick="createCode()"> <input class="btn" type="button" value="验证" onclick="validate()"><br>请点击验证码处: ↑<br></div><a id="more"></a><hr><p>js来源互联网<br></p><figure class="highlight"><figcaption><span>验证码js</span></figcaption><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></pre></td><td class="code"><pre><span class="line"><script type=<span class="string">"text/javascript"</span>></span><br><span class="line"> <span class="comment">//设置一个全局的变量，便于保存验证码</span></span><br><span class="line"> var code;</span><br><span class="line"> <span class="function">function <span class="title">createCode</span><span class="params">()</span></span>{</span><br><span class="line"> <span class="comment">//首先默认code为空字符串</span></span><br><span class="line"> code = <span class="string">''</span>;</span><br><span class="line"> <span class="comment">//设置长度，这里看需求，我这里设置了4</span></span><br><span class="line"> var codeLength = <span class="number">4</span>;</span><br><span class="line"> var codeV = document.getElementById(<span class="string">'code'</span>);</span><br><span class="line"> <span class="comment">//设置随机字符</span></span><br><span class="line"> var random = <span class="keyword">new</span> Array(<span class="number">0</span>,<span class="number">1</span>,<span class="number">2</span>,<span class="number">3</span>,<span class="number">4</span>,<span class="number">5</span>,<span class="number">6</span>,<span class="number">7</span>,<span class="number">8</span>,<span class="number">9</span>,<span class="string">'A'</span>,<span class="string">'B'</span>,<span class="string">'C'</span>,<span class="string">'D'</span>,<span class="string">'E'</span>,<span class="string">'F'</span>,<span class="string">'G'</span>,<span class="string">'H'</span>,<span class="string">'I'</span>,<span class="string">'J'</span>,<span class="string">'K'</span>,<span class="string">'L'</span>,<span class="string">'M'</span>,<span class="string">'N'</span>,<span class="string">'O'</span>,<span class="string">'P'</span>,<span class="string">'Q'</span>,<span class="string">'R'</span>, <span class="string">'S'</span>,<span class="string">'T'</span>,<span class="string">'U'</span>,<span class="string">'V'</span>,<span class="string">'W'</span>,<span class="string">'X'</span>,<span class="string">'Y'</span>,<span class="string">'Z'</span>);</span><br><span class="line"> <span class="comment">//循环codeLength 我设置的4就是循环4次</span></span><br><span class="line"> <span class="keyword">for</span>(var i = <span class="number">0</span>; i < codeLength; i++){</span><br><span class="line"> <span class="comment">//设置随机数范围,这设置为0 ~ 36</span></span><br><span class="line"> var index = Math.floor(Math.random()*<span class="number">36</span>);</span><br><span class="line"> <span class="comment">//字符串拼接 将每次随机的字符 进行拼接</span></span><br><span class="line"> code += random[index]; </span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//将拼接好的字符串赋值给展示的Value</span></span><br><span class="line"> codeV.value = code;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="comment">//下面就是判断是否== 的代码，无需解释,也可以结合ajax在后台做判断</span></span><br><span class="line"> <span class="function">function <span class="title">validate</span><span class="params">()</span></span>{</span><br><span class="line"> var Input = document.getElementById(<span class="string">'input'</span>);</span><br><span class="line"> var oValue = Input.value.toUpperCase();</span><br><span class="line"> <span class="keyword">if</span>(oValue ==<span class="number">0</span>){</span><br><span class="line"> alert(<span class="string">'请输入验证码'</span>);</span><br><span class="line"> }<span class="keyword">else</span> <span class="keyword">if</span>(oValue != code){</span><br><span class="line"> Input.value = <span class="string">''</span>;</span><br><span class="line"> alert(<span class="string">'验证码不正确，请重新输入'</span>);</span><br><span class="line"> createCode();</span><br><span class="line"> }<span class="keyword">else</span>{</span><br><span class="line"> Input.value = <span class="string">''</span>;</span><br><span class="line"> alert(<span class="string">'验证码正确！'</span>);<span class="comment">//window.open('http://lruihao.cn','_self');</span></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 class="comment">//设置此处的原因是每次进入界面展示一个随机的验证码，不设置则为空</span></span><br><span class="line"> window.onload = function (){</span><br><span class="line"></span><br><span class="line"> createCode();</span><br><span class="line"> }</span><br><span class="line"></script></span><br></pre></td></tr></table></figure><p></p></div><div class="popular-posts-header"><i class="fa fa-link"></i> 相关文章</div><!--[if !IE]><!--><details><summary 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// select top N slices in content
var upperBound = parseInt('1');
if (upperBound >= 0) {
slicesOfContent = slicesOfContent.slice(0, upperBound);
}
// highlight title and content
function highlightKeyword(text, slice) {
var result = '';
var prevEnd = slice.start;
slice.hits.forEach(function (hit) {
result += text.substring(prevEnd, hit.position);
var end = hit.position + hit.length;
result += '<b class="search-keyword">' + text.substring(hit.position, end) + '</b>';
prevEnd = end;
});
result += text.substring(prevEnd, slice.end);
return result;
}
var resultItem = '';
if (slicesOfTitle.length != 0) {
resultItem += "<li><a href='" + articleUrl + "' class='search-result-title'>" + highlightKeyword(title, slicesOfTitle[0]) + "</a>";
} else {
resultItem += "<li><a href='" + articleUrl + "' class='search-result-title'>" + title + "</a>";
}
slicesOfContent.forEach(function (slice) {
resultItem += "<a href='" + articleUrl + "'>" +
"<p class=\"search-result\">" + highlightKeyword(content, slice) +
"...</p>" + "</a>";
});
resultItem += "</li>";
resultItems.push({
item: resultItem,
searchTextCount: searchTextCount,
hitCount: hitCount,
id: resultItems.length
});
}
})
};
if (keywords.length === 1 && keywords[0] === "") {
resultContent.innerHTML = '<div id="no-result"><i class="fa fa-search fa-5x" /></div>'
} else if (resultItems.length === 0) {
resultContent.innerHTML = '<div id="no-result"><i class="fa fa-frown-o fa-5x" /></div>'
} else {
resultItems.sort(function (resultLeft, resultRight) {
if (resultLeft.searchTextCount !== resultRight.searchTextCount) {
return resultRight.searchTextCount - resultLeft.searchTextCount;
} else if (resultLeft.hitCount !== resultRight.hitCount) {
return resultRight.hitCount - resultLeft.hitCount;
} else {
return resultRight.id - resultLeft.id;
}
});
var searchResultList = '<ul class=\"search-result-list\">';
resultItems.forEach(function (result) {
searchResultList += result.item;
})
searchResultList += "</ul>";
resultContent.innerHTML = searchResultList;
}
}
if ('auto' === 'auto') {
input.addEventListener('input', inputEventFunction);
} else {
$('.search-icon').click(inputEventFunction);
input.addEventListener('keypress', function (event) {
if (event.keyCode === 13) {
inputEventFunction();
}
});
}
// remove loading animation
$(".local-search-pop-overlay").remove();
$('body').css('overflow', '');
proceedsearch();
}
});
}
// handle and trigger popup window;
$('.popup-trigger').click(function(e) {
e.stopPropagation();
if (isfetched === false) {
searchFunc(path, 'local-search-input', 'local-search-result');
} else {
proceedsearch();
};
});
$('.popup-btn-close').click(onPopupClose);
$('.popup').click(function(e){
e.stopPropagation();
});
$(document).on('keyup', function (event) {
var shouldDismissSearchPopup = event.which === 27 &&
$('.search-popup').is(':visible');
if (shouldDismissSearchPopup) {
onPopupClose();
}
});</script><script>!function(){var t=document.createElement("script"),e=window.location.protocol.split(":")[0];t.src="https"===e?"https://zz.bdstatic.com/linksubmit/push.js":"http://push.zhanzhang.baidu.com/push.js";var s=document.getElementsByTagName("script")[0];s.parentNode.insertBefore(t,s)}()</script><script src="/lib/pangu/dist/pangu.min.js?v=3.3"></script><script type="text/javascript">pangu.spacingPage()</script><script src="/lib/bookmark/bookmark.min.js?v=1.0"></script><script type="text/javascript">bookmark.scrollToMark("manual","#更多")</script><script>!function(e){var r=Array.prototype.slice.call(document.querySelectorAll("img[data-original]"));function t(){for(var c=0;c<r.length;c++)t=r[c],void 0,0<=(n=t.getBoundingClientRect()).top&&0<=n.left&&n.top<=(e.innerHeight||document.documentElement.clientHeight)&&function(){var t,n,e,i,o=r[c];t=o,n=function(){r=r.filter(function(t){return o!==t})},e=new Image,i=t.getAttribute("data-original"),e.onload=function(){t.src=i,n&&n()},e.src=i}();var t,n}t(),e.addEventListener("scroll",function(){!function(t,n){clearTimeout(t.tId),t.tId=setTimeout(function(){t.call(n)},500)}(t,e)})}(this);</script></body></html>