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vue-eleme
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<strong>Jzxer</strong>
<span>7月 05, 2017</span>
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<h3 id="准备工作"><a href="#准备工作" class="headerlink" title="准备工作"></a>准备工作</h3><ul>
<li>vue-cli</li>
<li>better-scroll</li>
<li>node.js</li>
<li>电脑(废话)</li>
<li>在dev-server中配置本地 data.json API接口</li>
</ul>
<h3 id="header组件"><a href="#header组件" class="headerlink" title="header组件"></a>header组件</h3><h4 id="star组件"><a href="#star组件" class="headerlink" title="star组件"></a>star组件</h4><ul>
<li>该项目中多处用到 星星 ,所以可以将它整合成一个组件,以复用</li>
<li>用 import 引入到父组件,给该组件传入 seller.score 评分数据<pre><code>itemClasses () {
let result = []
let score = Math.floor(this.score * 2) / 2
let hasDecimal = score % 1 !== 0
let integer = Math.floor(score)
for (let i = 0; i &lt; integer; i++) {
result.push(CLS_ON)
}
if (hasDecimal) {
result.push(CLS_HELF)
}
while (result.length &lt; STARLENG) {
result.push(CLS_OFF)
}
return result
}
</code></pre><blockquote>
<p>分别获取它们的整数,小数,和无</p>
</blockquote>
</li>
</ul>
<h4 id="sticky-footer-布局"><a href="#sticky-footer-布局" class="headerlink" title="sticky footer 布局"></a>sticky footer 布局</h4><ul>
<li><p>为了防止内容超过容器,图标遮挡内容的现象</p>
</li>
<li><p>实现原理就是设置一个容器将该容器的最小大小设置为100%,容器外面再设一个容器,给他一个负的 margin 或者是 padding将它固定在容器的最下方</p>
</li>
</ul>
<blockquote>
<p>可以参考我这篇(文章)[<a href="http://jzxer.cn/sticky-footer.html]" target="_blank" rel="noopener">http://jzxer.cn/sticky-footer.html]</a></p>
</blockquote>
<h3 id="goods-组件"><a href="#goods-组件" class="headerlink" title="goods 组件"></a>goods 组件</h3><h4 id="nextTrick-方法"><a href="#nextTrick-方法" class="headerlink" title="nextTrick () 方法"></a>nextTrick () 方法</h4><ul>
<li>该函数的意思是,当一个 DOM 刚刚 create 的时候,因为 DOM 会在当前 tick里面的代码全部执行完再更新所以不能做到在修改数据之后 DOM 更新之后再执行,要保证 DOM 更新之后再执行某一块代码,就必须放在下一次循环更新里面,,这样 DOM 更新后, 就会立即执行这块的代码<br>()[<a href="https://pic4.zhimg.com/47b878cfdac72ea510733667f39f2f6f_b.png]" target="_blank" rel="noopener">https://pic4.zhimg.com/47b878cfdac72ea510733667f39f2f6f_b.png]</a></li>
</ul>
<h4 id="better-scroll-插件"><a href="#better-scroll-插件" class="headerlink" title="better-scroll 插件"></a>better-scroll 插件</h4><blockquote>
<p>可以在 npm 包管理器中下载</p>
<ul>
<li>使用方法就是直接给你需要滚动的列表上创建一个实例该实例的调用要放在nextTrick因为触屏滚动每次都是需要更新 dom 的</li>
</ul>
</blockquote>
<h4 id="refs-和-el-数据传递"><a href="#refs-和-el-数据传递" class="headerlink" title="refs 和 el 数据传递"></a>refs 和 el 数据传递</h4><ul>
<li>refs就是将子组件的数据传递给父组件el就是 elment指的是该实例的 dom 分支</li>
</ul>
<h3 id="API-接口配置"><a href="#API-接口配置" class="headerlink" title="API 接口配置"></a>API 接口配置</h3><p>新建一个 express.Router() 实例,给它们分配路由路径,记得加入一个 errno ,判断是否正确获取数据</p>
<blockquote>
<p>这个时候就发现 node 是多么的强大,前后端全包了~</p>
</blockquote>
<h3 id="shopCart-组件"><a href="#shopCart-组件" class="headerlink" title="shopCart 组件"></a>shopCart 组件</h3><p>指的是底部购物车组件这个部分比较麻烦的是数据绑定因为我们需要绑定一个数据流点击添加商品判断商品是否大于起送价否则返回空按钮不可点击购物车头部无红色小标签是则按钮变为绿色购物logo变成蓝色出现红色计数标签。</p>
<h3 id="cartcontral-组件"><a href="#cartcontral-组件" class="headerlink" title="cartcontral 组件"></a>cartcontral 组件</h3><p>实现的思路是点击添加会改变shopcart里的数据双向绑定这里用到了 $emit 就是将子路由中的数据传递给父组件和ref的原理很像父组件再通过监听事件得到子组件的数据。</p>
<blockquote style="margin: 2em 0 0;padding: 0.5em 1em;border-left: 3px solid #F44336;background-color: #F5F5F5;list-style: none;">
<p><strong>
<a href="#" target="_blank">转载请注明出处,谢谢!</a>
</strong>
<br>
<strong>本文链接:</strong><a href="http://blog.jzxer.cn/vue-eleme.html">http://blog.jzxer.cn/vue-eleme.html</a>
</p>
</blockquote>
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function showTime(Counter) {
var query = new AV.Query(Counter);
$('.leancloud-views_num').each(function() {
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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;
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for (var i = 0; i < results.length; i++) {
var object = results[i];
var content = object.get('time') + ' ' + $(document.getElementById(url)).text();
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function addCount(Counter) {
var Counter = AV.Object.extend('Counter');
url = $('.leancloud-views_num').attr('id').trim();
title = $('.leancloud-views_num').attr('data-flag-title').trim();
var query = new AV.Query(Counter);
query.equalTo('url', url);
query.find({
success: function(results) {
if (results.length > 0) {
var counter = results[0];
counter.fetchWhenSave(true);
counter.increment('time');
counter.save(null, {
success: function(counter) {
var content = counter.get('time') + ' ' + $(document.getElementById(url)).text();
$(document.getElementById(url)).text(content);
},
error: function(counter, error) {
console.log('Failed to save Visitor num, with error message: ' + error.message);
}
});
} else {
var newcounter = new Counter();
newcounter.set('title', title);
newcounter.set('url', url);
newcounter.set('time', 1);
newcounter.save(null, {
success: function(newcounter) {
console.log('newcounter.get(\'time\')='+newcounter.get('time'));
var content = newcounter.get('time') + ' ' + $(document.getElementById(url)).text();
$(document.getElementById(url)).text(content);
},
error: function(newcounter, error) {
console.log('Failed to create');
}
});
}
},
error: function(error) {
console.log('Error:' + error.code + ' ' + error.message);
}
});
}
$(function() {
var Counter = AV.Object.extend('Counter');
if ($('.leancloud-views_num').length === 1) {
addCount(Counter);
} else if ($('.post-title-link').length > 1) {
showTime(Counter);
}
});
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