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meitu-item-lancome-hk.html
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<!DOCTYPE html>
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美图H5项目总结--lancome |
黄明照--一个在路上慢慢行走的前端人
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<ol class="post-toc"><li class="post-toc-item post-toc-level-2"><a class="post-toc-link" href="#问题"><span class="post-toc-number">1.</span> <span class="post-toc-text">问题</span></a><ol class="post-toc-child"><li class="post-toc-item post-toc-level-3"><a class="post-toc-link" href="#1-写到有重复的代码逻辑就要想着如何去优化代码"><span class="post-toc-number">1.1.</span> <span class="post-toc-text">1. 写到有重复的代码逻辑就要想着如何去优化代码</span></a></li><li class="post-toc-item post-toc-level-3"><a class="post-toc-link" href="#2-为了适配各种端，可以采用上下固定，中部居中布局"><span class="post-toc-number">1.2.</span> <span class="post-toc-text">2. 为了适配各种端，可以采用上下固定，中部居中布局</span></a></li><li class="post-toc-item post-toc-level-3"><a class="post-toc-link" href="#3-在ios的safari中，有些系统不支持flexbox，以下面方式兼容"><span class="post-toc-number">1.3.</span> <span class="post-toc-text">3. 在ios的safari中，有些系统不支持flexbox，以下面方式兼容</span></a></li><li class="post-toc-item post-toc-level-3"><a class="post-toc-link" href="#4-mapp中upload可以使用下面这种方式"><span class="post-toc-number">1.4.</span> <span class="post-toc-text">4. mapp中upload可以使用下面这种方式</span></a></li><li class="post-toc-item post-toc-level-3"><a class="post-toc-link" href="#5-对于形如一致的模块，最好单独写个模块"><span class="post-toc-number">1.5.</span> <span class="post-toc-text">5. 对于形如一致的模块，最好单独写个模块</span></a></li><li class="post-toc-item post-toc-level-3"><a class="post-toc-link" href="#6-可以自己单独扩展模块"><span class="post-toc-number">1.6.</span> <span class="post-toc-text">6. 可以自己单独扩展模块</span></a></li><li class="post-toc-item post-toc-level-3"><a class="post-toc-link" href="#6-facebook带图片分享问题"><span class="post-toc-number">1.7.</span> <span class="post-toc-text">6. facebook带图片分享问题</span></a></li><li class="post-toc-item post-toc-level-3"><a class="post-toc-link" href="#7-weibo分享问题"><span class="post-toc-number">1.8.</span> <span class="post-toc-text">7. weibo分享问题</span></a></li><li class="post-toc-item post-toc-level-3"><a class="post-toc-link" href="#8-复制面板"><span class="post-toc-number">1.9.</span> <span class="post-toc-text">8. 复制面板</span></a></li><li class="post-toc-item post-toc-level-3"><a class="post-toc-link" href="#9-事件绑定最好绑定一次，写在Once中"><span class="post-toc-number">1.10.</span> <span class="post-toc-text">9. 事件绑定最好绑定一次，写在Once中</span></a></li><li class="post-toc-item post-toc-level-3"><a class="post-toc-link" href="#10-在ios的safari中，transition和animation同时使用可能会出问题"><span class="post-toc-number">1.11.</span> <span class="post-toc-text">10. 在ios的safari中，transition和animation同时使用可能会出问题</span></a></li><li class="post-toc-item post-toc-level-3"><a class="post-toc-link" href="#11-唤起app的情况，ios用window-location-href的方式唤起比较合适，Android用iframe唤起比较合适。"><span class="post-toc-number">1.12.</span> <span class="post-toc-text">11. 唤起app的情况，ios用window.location.href的方式唤起比较合适，Android用iframe唤起比较合适。</span></a></li><li class="post-toc-item post-toc-level-3"><a class="post-toc-link" href="#12-使用’mcanvas’放大缩小问题"><span class="post-toc-number">1.13.</span> <span class="post-toc-text">12. 使用’mcanvas’放大缩小问题;</span></a></li><li class="post-toc-item post-toc-level-3"><a class="post-toc-link" href="#结语"><span class="post-toc-number">1.14.</span> <span class="post-toc-text">结语</span></a></li></ol></li></ol>
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美图H5项目总结--lancome
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<strong>黄明照</strong>
<span>1月 05, 2018</span>
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<p>对lancome的小项目做个小结</p>
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<p>这是项目的时间花点有点长。或多或少还是有学到一点东西。</p>
<h2 id="问题"><a href="#问题" class="headerlink" title="问题"></a>问题</h2><h3 id="1-写到有重复的代码逻辑就要想着如何去优化代码"><a href="#1-写到有重复的代码逻辑就要想着如何去优化代码" class="headerlink" title="1. 写到有重复的代码逻辑就要想着如何去优化代码"></a>1. 写到有重复的代码逻辑就要想着如何去优化代码</h3><h3 id="2-为了适配各种端，可以采用上下固定，中部居中布局"><a href="#2-为了适配各种端，可以采用上下固定，中部居中布局" class="headerlink" title="2. 为了适配各种端，可以采用上下固定，中部居中布局"></a>2. 为了适配各种端，可以采用上下固定，中部居中布局</h3><h3 id="3-在ios的safari中，有些系统不支持flexbox，以下面方式兼容"><a href="#3-在ios的safari中，有些系统不支持flexbox，以下面方式兼容" class="headerlink" title="3. 在ios的safari中，有些系统不支持flexbox，以下面方式兼容"></a>3. 在ios的safari中，有些系统不支持flexbox，以下面方式兼容</h3><figure class="highlight bash"><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></pre></td><td class="code"><pre><span class="line">父容器</span><br><span class="line">display: flex;</span><br><span class="line">justify-content: center;</span><br><span class="line">align-items: center;</span><br><span class="line"></span><br><span class="line">子 （水平垂直居中）</span><br><span class="line">position: absolute;</span><br><span class="line">left: 0;</span><br><span class="line">top: 0;</span><br><span class="line">right: 0;</span><br><span class="line">bottom: 0;</span><br><span class="line">margin: auto;</span><br></pre></td></tr></table></figure>
<h3 id="4-mapp中upload可以使用下面这种方式"><a href="#4-mapp中upload可以使用下面这种方式" class="headerlink" title="4. mapp中upload可以使用下面这种方式"></a>4. mapp中upload可以使用下面这种方式</h3><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></pre></td><td class="code"><pre><span class="line"></span><br><span class="line">$('.js-upload-home').on('change', function () {</span><br><span class="line"> app.loading.show();</span><br><span class="line"> app.emit('uploadSuccess', this.files[0]);</span><br><span class="line"> //上传同一张的情况</span><br><span class="line"> $(this).val('');</span><br><span class="line"> gtag('event', 'completeUpload');</span><br><span class="line"> });</span><br><span class="line"></span><br><span class="line"> app.on('uploadSuccess', function(file) {</span><br><span class="line"> app.upload(file).then(data => {</span><br><span class="line"> self.onSuccess(data);</span><br><span class="line"> }).catch(app.catchErr.upload);</span><br><span class="line"> });</span><br></pre></td></tr></table></figure>
<h3 id="5-对于形如一致的模块，最好单独写个模块"><a href="#5-对于形如一致的模块，最好单独写个模块" class="headerlink" title="5. 对于形如一致的模块，最好单独写个模块"></a>5. 对于形如一致的模块，最好单独写个模块</h3><figure class="highlight bash"><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></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"><span class="built_in">let</span> firstModal = <span class="literal">true</span>;</span><br><span class="line"> this.modal = (options) =>{</span><br><span class="line"> options = $.extend(<span class="literal">true</span>,{</span><br><span class="line"> <span class="built_in">type</span>: ``,</span><br><span class="line"> delay: 100,</span><br><span class="line"> head: ``,</span><br><span class="line"> body: ``,</span><br><span class="line"> txtCancel: `取 消`,</span><br><span class="line"> txtConfirm: `确 认`,</span><br><span class="line"> onCancle: () =>{</span><br><span class="line"> $(<span class="string">'.js-modal'</span>).removeClass(<span class="string">'show'</span>);</span><br><span class="line"> },</span><br><span class="line"> onConfirm: ()=>{</span><br><span class="line"></span><br><span class="line"> },</span><br><span class="line"> },options);</span><br><span class="line"> setTimeout( ()=>{</span><br><span class="line"> $(<span class="string">'.js-modal'</span>).addClass(<span class="string">'show'</span>);</span><br><span class="line"> $(<span class="string">'.js-modal .js-image-share'</span>) && $(<span class="string">'.js-modal .js-image-share'</span>).attr(<span class="string">'src'</span>, this.image.share || <span class="string">''</span>);</span><br><span class="line"> },options.delay);</span><br><span class="line"> <span class="keyword">if</span> (options.type === <span class="string">'fb'</span>){</span><br><span class="line"> $(<span class="string">'.js-modal .js-head'</span>).addClass(<span class="string">'fb'</span>);</span><br><span class="line"> }</span><br><span class="line"> $(<span class="string">'.js-modal .js-head'</span>).text(options.head);</span><br><span class="line"> $(<span class="string">'.js-modal .js-body'</span>).html(options.body);</span><br><span class="line"> $(<span class="string">'.js-modal .js-cancel'</span>).text(options.txtCancel);</span><br><span class="line"> $(<span class="string">'.js-modal .js-confirm'</span>).text(options.txtConfirm);</span><br><span class="line"> <span class="keyword">if</span> (firstModal){</span><br><span class="line"> $(<span class="string">'.js-modal'</span>).off().on(<span class="string">'tap'</span>, (event) => {</span><br><span class="line"> <span class="built_in">let</span> target = event.target.dataset.target;</span><br><span class="line"> switch (target) {</span><br><span class="line"> <span class="keyword">case</span> <span class="string">'cancel'</span>:</span><br><span class="line"> options.onCancle();</span><br><span class="line"> <span class="built_in">break</span>;</span><br><span class="line"> <span class="keyword">case</span> <span class="string">'confirm'</span>:</span><br><span class="line"> options.onConfirm();</span><br><span class="line"> <span class="built_in">break</span>;</span><br><span class="line"> default:</span><br><span class="line"> <span class="built_in">break</span>;</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>
<h3 id="6-可以自己单独扩展模块"><a href="#6-可以自己单独扩展模块" class="headerlink" title="6. 可以自己单独扩展模块"></a>6. 可以自己单独扩展模块</h3><figure class="highlight bash"><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></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"><span class="built_in">export</span> default {</span><br><span class="line"> name: <span class="string">'_share_'</span>,</span><br><span class="line"> main: Share,</span><br><span class="line"> <span class="function"><span class="title">init</span></span>() {</span><br><span class="line"> this.<span class="variable">$share</span> = new this._share_(this.options.shareData, this);</span><br><span class="line"> this.<span class="variable">$webShare</span> = new WebShare();</span><br><span class="line"> this.setShare = data => {</span><br><span class="line"> this.<span class="variable">$share</span>.setShare(data);</span><br><span class="line"> this.<span class="variable">$webShare</span>.setShare(data);</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"><span class="keyword">function</span> <span class="function"><span class="title">WebShare</span></span>() {</span><br><span class="line"></span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">WebShare.prototype.setShare = <span class="keyword">function</span> (data) {</span><br><span class="line"></span><br><span class="line"> this.data = $.extend(<span class="literal">true</span>, {</span><br><span class="line"> title: <span class="string">''</span>,</span><br><span class="line"> imageUrl: <span class="string">''</span>,</span><br><span class="line"> description: <span class="string">''</span>,</span><br><span class="line"> link: <span class="string">''</span>,</span><br><span class="line"> copydata: <span class="string">''</span>,</span><br><span class="line"> }, data);</span><br><span class="line">};</span><br></pre></td></tr></table></figure>
<h3 id="6-facebook带图片分享问题"><a href="#6-facebook带图片分享问题" class="headerlink" title="6. facebook带图片分享问题"></a>6. facebook带图片分享问题</h3><p>使用后端返回链接<a href="http://makeup.sea.channet.com/expre/lancome/handle2" target="_blank" rel="noopener">http://makeup.sea.channet.com/expre/lancome/handle2</a><br><figure class="highlight bash"><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></pre></td><td class="code"><pre><span class="line"></span><br><span class="line">//http://makeup.sea.channet.com/expre/lancome/handle2</span><br><span class="line"></span><br><span class="line"><!DOCTYPE html></span><br><span class="line"><html lang=<span class="string">"zh-cn"</span>></span><br><span class="line"><head></span><br><span class="line"> <meta charset=<span class="string">"UTF-8"</span>></span><br><span class="line"> <title>Lancôme邀您即時製作唇色美照</title></span><br><span class="line"> <meta content=<span class="string">"width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=0"</span> name=<span class="string">"viewport"</span>></span><br><span class="line"> <meta http-equiv=<span class="string">"X-UA-Compatible"</span> content=<span class="string">"IE=edge,chrome=1"</span>></span><br><span class="line"> <meta name=<span class="string">"format-detection"</span> content=<span class="string">"telephone=no"</span>></span><br><span class="line"> <meta property=<span class="string">"fb:app_id"</span> content=<span class="string">"344854949231285"</span>></span><br><span class="line"> <meta property=<span class="string">"og:image"</span> content=<span class="string">""</span>></span><br><span class="line"> <meta property=<span class="string">"og:title"</span> content=<span class="string">"一按擁有 您的瑰麗唇色美照"</span>></span><br><span class="line"> <meta property=<span class="string">"og:type"</span> content=<span class="string">"website"</span>></span><br><span class="line"> <meta property=<span class="string">"og:url"</span> content=<span class="string">"http://makeup.sea.channet.com/expre/lancome/handle2?imageurl="</span>></span><br><span class="line"> </head></span><br><span class="line"> <body></span><br><span class="line"> <script></span><br><span class="line"> (<span class="function"><span class="title">function</span></span> () {</span><br><span class="line"> location.href = <span class="string">"http://makeup.sea.channet.com/lancome/hk"</span>;</span><br><span class="line"> })();</span><br><span class="line"></script></span><br><span class="line"> </body></span><br><span class="line"></html></span><br></pre></td></tr></table></figure></p>
<figure class="highlight bash"><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></pre></td><td class="code"><pre><span class="line"></span><br><span class="line">WebShare.prototype.facebook = <span class="keyword">function</span> (callback) {</span><br><span class="line"> // FB.ui({</span><br><span class="line"> // method: <span class="string">'share'</span>,</span><br><span class="line"> // mobile_iframe: <span class="literal">true</span>,</span><br><span class="line"> // href: getHomePage(),</span><br><span class="line"> // name: this.data.title,</span><br><span class="line"> // display: <span class="string">'popup'</span>,</span><br><span class="line"> // description: ``,</span><br><span class="line"> // picture: this.data.pic,</span><br><span class="line"> // frictionlessRequests: <span class="string">'false'</span>,</span><br><span class="line"> // hashtag: this.data.hashtag,</span><br><span class="line"> // }, <span class="keyword">function</span> (response) {</span><br><span class="line"> // console.log(response);</span><br><span class="line"> // });</span><br><span class="line"> const data = {</span><br><span class="line"> appID: <span class="string">'201122177111171'</span>,</span><br><span class="line"> href: getURL(this.data.pic),</span><br><span class="line"> hashtag: this.data.hashtag,</span><br><span class="line"> };</span><br><span class="line"> window.open([</span><br><span class="line"> <span class="string">'https://www.facebook.com/v2.10/dialog/share?'</span>,</span><br><span class="line"> <span class="string">'href='</span> + encodeURIComponent(data.href),</span><br><span class="line"> <span class="string">'&app_id='</span> + data.appID,</span><br><span class="line"> <span class="string">'&hashtag='</span> + encodeURIComponent(data.hashtag),</span><br><span class="line"> ].join(<span class="string">''</span>), <span class="string">'newwindow'</span>, <span class="string">'toolbar=no, menubar=no, scrollbars=yes, resizable=no, location=no, status=no'</span>);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">function</span> getURL(imageURL) {</span><br><span class="line"> <span class="built_in">return</span> <span class="string">'http://makeup.sea.channet.com/expre/lancome/handle2?imageurl='</span> + encodeURIComponent(imageURL);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> callback && callback(this.data);</span><br><span class="line">};</span><br></pre></td></tr></table></figure>
<h3 id="7-weibo分享问题"><a href="#7-weibo分享问题" class="headerlink" title="7. weibo分享问题"></a>7. weibo分享问题</h3><figure class="highlight bash"><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"></span><br><span class="line">WebShare.prototype.weibo = <span class="function"><span class="title">function</span></span> () {</span><br><span class="line"> const shareData = {</span><br><span class="line"> title: this.data.title,</span><br><span class="line"> pic: this.data.pic,</span><br><span class="line"> url: this.data.url,</span><br><span class="line"> // appkey: <span class="string">'1895078391'</span>,</span><br><span class="line"> };</span><br><span class="line"></span><br><span class="line"> // encode url</span><br><span class="line"> shareData.title = encodeURIComponent(shareData.title);</span><br><span class="line"> shareData.url = encodeURIComponent(shareData.url);</span><br><span class="line"> // shareData.pic = encodeURIComponent(shareData.pic);</span><br><span class="line"></span><br><span class="line"> // location.href = `http://v.t.sina.com.cn/share/share.php?<span class="variable">${querify(shareData)}</span>`;</span><br><span class="line"> window.open(`http://v.t.sina.com.cn/share/share.php?<span class="variable">${querify(shareData)}</span>`);</span><br><span class="line">};</span><br></pre></td></tr></table></figure>
<h3 id="8-复制面板"><a href="#8-复制面板" class="headerlink" title="8. 复制面板"></a>8. 复制面板</h3><figure class="highlight bash"><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"></span><br><span class="line">import CB from <span class="string">'clipboard'</span>;</span><br><span class="line"></span><br><span class="line">WebShare.prototype.copy = <span class="keyword">function</span> (data) {</span><br><span class="line"> new CB(<span class="string">'body'</span>,{</span><br><span class="line"> text: () => {</span><br><span class="line"> <span class="built_in">return</span> data;</span><br><span class="line"> },</span><br><span class="line"> });</span><br><span class="line">};</span><br></pre></td></tr></table></figure>
<h3 id="9-事件绑定最好绑定一次，写在Once中"><a href="#9-事件绑定最好绑定一次，写在Once中" class="headerlink" title="9. 事件绑定最好绑定一次，写在Once中"></a>9. 事件绑定最好绑定一次，写在Once中</h3><h3 id="10-在ios的safari中，transition和animation同时使用可能会出问题"><a href="#10-在ios的safari中，transition和animation同时使用可能会出问题" class="headerlink" title="10. 在ios的safari中，transition和animation同时使用可能会出问题"></a>10. 在ios的safari中，transition和animation同时使用可能会出问题</h3><h3 id="11-唤起app的情况，ios用window-location-href的方式唤起比较合适，Android用iframe唤起比较合适。"><a href="#11-唤起app的情况，ios用window-location-href的方式唤起比较合适，Android用iframe唤起比较合适。" class="headerlink" title="11. 唤起app的情况，ios用window.location.href的方式唤起比较合适，Android用iframe唤起比较合适。"></a>11. 唤起app的情况，ios用window.location.href的方式唤起比较合适，Android用iframe唤起比较合适。</h3><h3 id="12-使用’mcanvas’放大缩小问题"><a href="#12-使用’mcanvas’放大缩小问题" class="headerlink" title="12. 使用’mcanvas’放大缩小问题;"></a>12. 使用’mcanvas’放大缩小问题;</h3><figure class="highlight bash"><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></pre></td><td class="code"><pre><span class="line">竖</span><br><span class="line">mc.add(image, {</span><br><span class="line"> width: <span class="string">'100%'</span>,</span><br><span class="line"> pos: {</span><br><span class="line"> // x: (-disX + (app.canvasLeft * rateH)),</span><br><span class="line"> x: (app.canvasLeft * rateW),</span><br><span class="line"> y: (app.canvasTop * rateW),</span><br><span class="line"> scale: app.canvasScale,</span><br><span class="line"> rotate: 0,</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">横</span><br><span class="line">mc.add(image, {</span><br><span class="line"> width: image.width * (750 / image.height),</span><br><span class="line"> pos: {</span><br><span class="line"> x: (app.canvasLeft * rateH),</span><br><span class="line"> y: (app.canvasTop * rateH),</span><br><span class="line"> // x: 0,</span><br><span class="line"> // y: 0,</span><br><span class="line"> scale: app.canvasScale,</span><br><span class="line"> rotate: 0,</span><br><span class="line"> },</span><br><span class="line"> })</span><br></pre></td></tr></table></figure>
<h3 id="结语"><a href="#结语" class="headerlink" title="结语"></a>结语</h3><p>在写放大缩小功能的时候，问的问题事后想想有点傻逼，啊哈哈哈哈哈哈哈，个人感觉自己有时候依赖性有点强，一遇到问题就想问，要改要改！！！自己想先办法解决，解决不了在问！！！！！就酱紫吧。</p>
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<aside id="sidebar" class="sidebar sidebar-colored sidebar-fixed-left" role="navigation">
<div id="sidebar-main">
<!-- Sidebar Header -->
<div class="sidebar-header header-cover" style="background-image: url(/img/sidebar_header.png);">
<!-- Top bar -->
<div class="top-bar"></div>
<!-- Sidebar toggle button -->
<button type="button" class="sidebar-toggle mdl-button mdl-js-button mdl-js-ripple-effect mdl-button--icon" style="display: initial;" data-upgraded=",MaterialButton,MaterialRipple">
<i class="material-icons">clear_all</i>
<span class="mdl-button__ripple-container">
<span class="mdl-ripple">
</span>
</span>
</button>
<!-- Sidebar Avatar -->
<div class="sidebar-image">
<img src="/img/avatar1.jpg" alt="黄明照's avatar">
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<a data-toggle="dropdown" class="sidebar-brand" href="#settings-dropdown">
beheroto@gmail.com
<b class="caret"></b>
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<ul class="nav sidebar-nav">
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<li class="dropdown">
<ul id="settings-dropdown" class="dropdown-menu">
<li>
<a href="mailto: beheroto@gmail.com" target="_blank" title="Email Me">
<i class="material-icons sidebar-material-icons sidebar-indent-left1pc-element">email</i>
Email Me
</a>
</li>
<li>
<a href="https://github.com/ishareme" target="_blank" title="Github">
<i class="material-icons sidebar-material-icons sidebar-indent-left1pc-element">star</i>
Github
</a>
</li>
</ul>
</li>
<!-- Homepage -->
<li id="sidebar-first-li">
<a href="/">
<i class="material-icons sidebar-material-icons">home</i>
主页
</a>
</li>
<!-- Archives -->
<li class="dropdown">
<a href="#" class="ripple-effect dropdown-toggle" data-toggle="dropdown">
<i class="material-icons sidebar-material-icons">inbox</i>
归档
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</a>
<ul class="dropdown-menu">
<li>
<a class="sidebar_archives-link" href="/archives/2018/10/">十月 2018<span class="sidebar_archives-count">1</span></a></li><li><a class="sidebar_archives-link" href="/archives/2018/08/">八月 2018<span class="sidebar_archives-count">2</span></a></li><li><a class="sidebar_archives-link" href="/archives/2018/03/">三月 2018<span class="sidebar_archives-count">3</span></a></li><li><a class="sidebar_archives-link" href="/archives/2018/02/">二月 2018<span class="sidebar_archives-count">6</span></a></li><li><a class="sidebar_archives-link" href="/archives/2018/01/">一月 2018<span class="sidebar_archives-count">1</span></a></li><li><a class="sidebar_archives-link" href="/archives/2017/10/">十月 2017<span class="sidebar_archives-count">3</span></a></li><li><a class="sidebar_archives-link" href="/archives/2017/08/">八月 2017<span class="sidebar_archives-count">3</span></a></li><li><a class="sidebar_archives-link" href="/archives/2017/07/">七月 2017<span class="sidebar_archives-count">2</span></a>
</ul>
</li>
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<li class="dropdown">
<a href="#" class="ripple-effect dropdown-toggle" data-toggle="dropdown">
<i class="material-icons sidebar-material-icons">chrome_reader_mode</i>
分类
<b class="caret"></b>
</a>
<ul class="dropdown-menu">
<li>
<a class="sidebar_archives-link" href="/categories/渣技术/">渣技术<span class="sidebar_archives-count">18</span></a></li><li><a class="sidebar_archives-link" href="/categories/闲言语/">闲言语<span class="sidebar_archives-count">1</span></a>
</ul>
</li>
<!-- Pages -->
<li>
<a href="https://github.com/ishareme" title="Github">
<i class="material-icons sidebar-material-icons">star</i>
Github
</a>
</li>
<li>
<a href="/links" title="Links">
<i class="material-icons sidebar-material-icons">group</i>
Links
</a>
</li>
<li>
<a href="/gallery" title="Gallery">
<i class="material-icons sidebar-material-icons">photo_camera</i>
Gallery
</a>
</li>
<li class="divider"></li>
<li>
<a href="/tags" title="Tags">
<i class="material-icons sidebar-material-icons">bookmark_border</i>
Tags
</a>
</li>
<li>
<a href="/timeline" title="Timeline">
<i class="material-icons sidebar-material-icons">timeline</i>
Timeline
</a>
</li>
<li>
<a href="http://ougxgesj3.bkt.clouddn.com/%E9%BB%84%E6%98%8E%E7%85%A7-%E5%89%8D%E7%AB%AF%E5%BC%80%E5%8F%91%E5%B7%A5%E7%A8%8B%E5%B8%88.pdf" title="About">
<i class="material-icons sidebar-material-icons">person</i>
About
</a>
</li>
<!-- Article Number -->
<li>
<a href="/archives">
文章总数
<span class="sidebar-badge">21</span>
</a>
</li>
</ul>
<!-- Sidebar Footer -->
<!--
I'm glad you use this theme, the development is no so easy, I hope you can keep the copyright, I will thank you so much.
If you still want to delete the copyrights, could you still retain the first one? Which namely "Theme Material"
It will not impact the appearance and can give developers a lot of support :)
很高兴您使用并喜欢该主题，开发不易 十分谢谢与希望您可以保留一下版权声明。
如果您仍然想删除的话 能否只保留第一项呢？即 "Theme Material"
它不会影响美观并可以给开发者很大的支持和动力。 :)
-->
<!-- Sidebar Divider -->
<div class="sidebar-divider"></div>
<!-- Theme Material -->
<!-- Help & Support -->
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-->
<!-- Feedback -->
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<!-- About Theme -->
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</div>
<!-- Sidebar Image -->
</aside>
<!-- Footer Top Button -->
<div id="back-to-top" class="toTop-wrap">
<a href="#top" class="toTop">
<i class="material-icons footer_top-i">expand_less</i>
</a>
</div>
<!--Footer-->
<footer class="mdl-mini-footer" id="bottom">
<!-- Paradox Footer Left Section -->
<div class="mdl-mini-footer--left-section sns-list">
<!-- Twitter -->
<!-- Facebook -->
<!-- Google + -->
<!-- Weibo -->
<a href="https://weibo.com/3018998921/profile?rightmod=1&wvr=6&mod=personinfo" target="_blank">
<button class="mdl-mini-footer--social-btn social-btn footer-sns-weibo">
<span class="visuallyhidden">Weibo</span>
</button><!--
--></a>
<!-- Instagram -->
<!-- Tumblr -->
<!-- Github -->
<a href="https://github.com/ishareme" target="_blank">
<button class="mdl-mini-footer--social-btn social-btn footer-sns-github">
<span class="visuallyhidden">Github</span>
</button><!--
--></a>
<!-- LinkedIn -->
<a href="https://www.linkedin.com/in/%E6%98%8E%E7%85%A7-%E9%BB%84-79042b105/" target="_blank">
<button class="mdl-mini-footer--social-btn social-btn footer-sns-linkedin">
<span class="visuallyhidden">LinkedIn</span>
</button><!--
--></a>
<!-- Zhihu -->
<a href="https://www.zhihu.com/people/ishareme/activities" target="_blank">
<button class="mdl-mini-footer--social-btn social-btn footer-sns-zhihu">
<span class="visuallyhidden">Zhihu</span>
</button><!--
--></a>
<!-- Bilibili -->
<!-- Telegram -->
<!-- V2EX -->
</div>
<!--Copyright-->
<div id="copyright">
Copyright © 2017 -<script type="text/javascript">var fd = new Date();document.write(" " + fd.getFullYear() + " ");</script>黄明照--一个在路上慢慢行走的前端人
</div>
<!-- Paradox Footer Right Section -->
<!--
I am glad you use this theme, the development is no so easy, I hope you can keep the copyright.
It will not impact the appearance and can give developers a lot of support :)
很高兴您使用该主题，开发不易，希望您可以保留一下版权声明。
它不会影响美观并可以给开发者很大的支持。 :)
-->
<div class="mdl-mini-footer--right-section">
<div>
<div class="footer-develop-div">Powered by <a href="https://hexo.io" target="_blank" class="footer-develop-a">Hexo</a></div>
<div class="footer-develop-div">Theme - <a href="https://github.com/viosey/hexo-theme-material" target="_blank" class="footer-develop-a">Material</a></div>
</div>
</div>
</footer>
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<script>lsloader.load("lazyload_js","/js/lazyload.min.js?1BcfzuNXqV+ntF6gq+5X3Q==", true)</script>
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<script>lsloader.load("np_js","/js/nprogress.js?pl3Qhb9lvqR1FlyLUna1Yw==", true)</script>
<script type="text/ls-javascript" id="NProgress-script">
NProgress.configure({
showSpinner: true
});
NProgress.start();
$('#nprogress .bar').css({
'background': '#29d'
});
$('#nprogress .peg').css({
'box-shadow': '0 0 10px #29d, 0 0 15px #29d'
});
$('#nprogress .spinner-icon').css({
'border-top-color': '#29d',
'border-left-color': '#29d'
});
setTimeout(function() {
NProgress.done();
$('.fade').removeClass('out');
}, 800);
</script>
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<script>
AV.initialize('ztvc2Jdss3JEXFT7bmDXiR6u-gzGzoHsz', 'SaIXu97lk5KQeyTiQ6VmgDLF');
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function showTime(Counter) {
var query = new AV.Query(Counter);
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var url = $(this).attr('id').trim();
query.equalTo('url', url);
query.find({
success: function(results) {
if (results.length === 0) {
var content = '0 ' + $(document.getElementById(url)).text();
$(document.getElementById(url)).text(content);
return;
}
for (var i = 0; i < results.length; i++) {
var object = results[i];
var content = object.get('time') + ' ' + $(document.getElementById(url)).text();
$(document.getElementById(url)).text(content);
}
},