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<!DOCTYPE HTML>
<html lang="en-US" >
<head>
<meta charset="UTF-8">
<title>微博小案例 | 主要内容</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="description" content="">
<meta name="generator" content="GitBook 1.0.3">
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<li class="chapter " data-level="0" data-path="index.html">
<a href="./index.html">
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day03
</a>
<ul class="articles">
<li class="chapter active" data-level="0.1" data-path="1.html">
<a href="./1.html">
<i class="fa fa-check"></i>
<b>0.1.</b>
微博小案例
</a>
</li>
<li class="chapter " data-level="0.2" data-path="2.html">
<a href="./2.html">
<i class="fa fa-check"></i>
<b>0.2.</b>
cookie存储
</a>
</li>
<li class="chapter " data-level="0.3" data-path="3.html">
<a href="./3.html">
<i class="fa fa-check"></i>
<b>0.3.</b>
sessionStorage存储
</a>
</li>
<li class="chapter " data-level="0.4" data-path="5.html">
<a href="./5.html">
<i class="fa fa-check"></i>
<b>0.4.</b>
localStorage存储
</a>
</li>
<li class="chapter " data-level="0.5" data-path="6.html">
<a href="./6.html">
<i class="fa fa-check"></i>
<b>0.5.</b>
应用程序缓存
</a>
</li>
<li class="chapter " data-level="0.6" data-path="06.html">
<a href="./06.html">
<i class="fa fa-check"></i>
<b>0.6.</b>
hash简单介绍
</a>
</li>
<li class="chapter " data-level="0.7" data-path="07.html">
<a href="./07.html">
<i class="fa fa-check"></i>
<b>0.7.</b>
实现跨域网络访问
</a>
</li>
<li class="chapter " data-level="0.8" data-path="08.html">
<a href="./08.html">
<i class="fa fa-check"></i>
<b>0.8.</b>
js模板简单说明
</a>
</li>
</ul>
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<li class="divider"></li>
<li>
<a href="http://www.gitbook.io/" target="blank" class="gitbook-link">Published using GitBook</a>
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<!-- Actions Left -->
<a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
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<!-- Title -->
<h1>
<i class="fa fa-circle-o-notch fa-spin"></i>
<a href="./" >主要内容</a>
</h1>
</div>
<div class="page-wrapper" tabindex="-1">
<div class="page-inner">
<section class="normal" id="section-gitbook_3395">
<h1 id="">微博小案例</h1>
<p><strong>01 实现点赞和踩的功能 </strong></p>
<p>实现思路：</p>
<pre><code>（1）要实现点赞和踩的功能，需要给点赞，踩等按钮添加点击事件
（2）在写入微博内容之后，先找到对应的标签（通过div.find("class")）;
（3）抽取方法addTopClickEvent|addDownClickEvent等,把查找到的标签作为参数传递给该方法
（4）说明顶和踩等操作都需要发送网络请求，演示终极版本的页面说明
（5）查看对应的接口，说明参数中用到了id属性，那么封装好的方法中就需要多一个参数（obj对象）
（6）发送点赞的网络请求，说明请求成功之后服务器返回的结果是{error:0},没有意义，我们需要做的就是请求成功之后+1
（7）同样的思路处理踩的功能（直接拷贝修改请求路径）
</code></pre><p>核心代码：</p>
<pre><code> function addTopClickEvent(dom,obj) {
//添加点击事件
dom.click(function () {
//发送网络请求
$.ajax({
"url":baseURL,
"data":"act=acc&id="+obj.id,
"type":"GET",
"success":function (response) {
dom.text(parseInt(dom.text()) + 1);
}});
});
}
function addDownClickEvent(dom,obj) {
//添加点击事件
dom.click(function () {
//发送网络请求
$.ajax({
"url":baseURL,
"data":"act=ref&id="+obj.id,
"type":"GET",
"success":function (response) {
dom.text(parseInt(dom.text()) + 1);
}});
});
}
</code></pre><p><strong>02 实现删除操作</strong></p>
<p>实现思路：</p>
<pre><code>（1）参考已经实现的点赞和踩功能，封装addDelClickEvent方法，该方法接收两个参数jQuery的实例对象和该对象对应的obj对象（存放微博数据的id）
（2）删除操作：说明dom.remove方法无法直接删除自己
使用dom.parents(".replay").remove()方法可以删除，但是删除完微博数据之后发现还是需要更新获取最新的数据
（3）删除操作：重新获取默认的微博数据 + 重新获取页码信息
</code></pre><p>核心代码：</p>
<pre><code> function addDelClickEvent(dom,obj) {
//添加点击事件
dom.click(function () {
//发送网络请求
$.ajax({
"url":baseURL,
"data":"act=ref&id="+obj.id,
"type":"GET",
"success":function (response) {
//dom.text(parseInt(dom.text()) + 1);
//找到父节点然后删除
//dom.parents(".reply").remove();
//方案二：重新请求获取当前页面信息
getMsgWithPage(1);
getPageCount();
}});
});
}
</code></pre><p> <strong>03 使用模板引擎进行处理 </strong></p>
<p> 地址：<a href="https://github.com/aui/art-template" target="_blank">https://github.com/aui/art-template</a></p>
<p> 使用步骤：</p>
<pre><code> （1） 引入框架的头文件 <script src="dist/template-native.js"></script>
（2）设置script相关标签<script id="test" type="text/html">
（3）调用template('test', data);方法实现
</code></pre><p> 示例代码：</p>
<pre><code><script id="test" type="text/html">
<h1><%=title%></h1>
<ul>
<% for(var i = 0, len = list.length; i < len; i++){ %>
<li><%=list[i]%></li>
<% } %>
</ul>
</script>
<script>
var data = {
title: '基本例子',
list: ['文艺1', '博客2', '摄影3', '电影4', '民谣5', '旅行6', '吉他7']
};
var html = template('test', data);
document.body.innerHTML = html;
</script>
</code></pre><p> 模板应用到微博案例中</p>
<pre><code> <script id="nj" type="text/html">
<p class="replyContent"><%=content%></p>
<p class="operation">
<span class="replyTime"><%=time%></span>
<span class="handle">
<a href="javascript:;" class="top"><%=acc%></a>
<a href="javascript:;" class="down_icon"><%=ref%></a>
<a href="javascript:;" class="cut">删除</a>
</span>
</p>
</script>
</code></pre>
</section>
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