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jquery tmpl 详解

先峰老师 2022-04-06 阅读 47


动态请求数据来更新页面是现在非常常用的方法,比如博客评论的分页动态加载,微博的滚动加载和定时请求加载等。


这些情况下,动态请求返回的数据一般不是已拼好的 HTML 就是 JSON 或 XML,总之不在浏览器端拼数据就在服务器端拼数据。不过,从传输量方面来看,返回 HTML 不划算,而在 web 传输方面,现在更多的是使用 JSON 而不是 XML。

浏览器端根据 JSON 生成 HTML 有个很苦恼的地方就是,结构不复杂的时候还好,结构一复杂,就想死了,需要很小心很小心地写出几乎无法维护的 JavaScript 代码。

因此一些用模版生成HTML的的框架相继出现jquery.tmpl 就是其中的一种,下面我们来详细介绍下jquery.tmpl的用法

jquery.tmpl的几种常用标签分别有:

${}​, ​{{each}}​, ​{{if}}​, ​{{else}}​, ​{{html}}

不常用标签

 ​{{=}}​,​{{tmpl}}​ and ​{{wrap}}.

${}​等同与​{{=}}​是输出变量 ​${}​里面还可以放表达式 (=和变量之间一定要有空格,否则无效)

示例:

jquery tmpl 详解_jquery

<div id="div_demo">
</div>
<script id="demo" type="text/x-jquery-tmpl">
<div style="margin-bottom:10px;">
  <span>${ID}</span>
  <span style="margin-left:10px;">{{= Name}}</span>
  <span style="margin-left:10px;">${Number(Num)+1}</span>
  <span style="margin-left:10px;">${Status}</span>
</div>
</script>
<script type="text/javascript">
  var users = [{ ID: 'think8848', Name: 'Joseph Chan', Num: '1', Status: 1 }, { ID: 'aCloud', Name: 'Mary Cheung', Num: '2'}];
  $("#demo").tmpl(users).appendTo('#div_demo');
</script>

jquery tmpl 详解_jquery




{{each}}​ 提供循环逻辑,$value访问迭代变量 也可以自定义迭代变量(i,value)

示例:

jquery tmpl 详解_jquery

<div id="div_each">
</div>
<script id="each" type="text/x-jquery-tmpl">
<h3>users</h3>
{{each(i,user) users}}
<div>${i+1}:{{= user.name}}</div>
{{if i==0}}
<h4>group</h4>
{{each(j,group) groups}}
<div>${group.name}</div>
{{/each}}
{{/if}}
{{/each}}
<h3>depart</h3>
{{each departs}}
<div>{{= $value.name}}</div>
{{/each}}
</script>
<script type="text/javascript">
  var eachData = { users: [{ name: 'jerry' }, { name: 'john'}], groups: [{ name: 'mingdao' }, { name: 'meihua' }, { name: 'test'}], departs: [{ name: 'IT'}] };
  $("#each").tmpl(eachData).appendTo('#div_each');
</script>

jquery tmpl 详解_jquery



{{if }} {{else}}​提供了分支逻辑 {{else}} 相当于else if

示例:


jquery tmpl 详解_jquery

<div id="div_ifelse"></div>
<script id="ifelse" type="text/x-jquery-tmpl">
<div style="margin-bottom:10px;"><span>${ID}</span><span style="margin-left:10px;">{{= Name}}</span>
{{if Status}}
<span>Status${Status}</span>
{{else App}}
<span>App${App}</span>
{{else}}
<span>None</span>
{{/if}}
</div>
</script>
<script type="text/javascript">
  var users = [{ ID: 'think8848', Name: 'Joseph Chan', Status: 1, App: 0 }, { ID: 'aCloud', Name: 'Mary Cheung', App: 1 }, { ID: 'bMingdao', Name: 'Jerry Jin'}];
$("#ifelse").tmpl(users).appendTo('#div_ifelse');
</script>

jquery tmpl 详解_jquery


{{html}}​ 输出变量html,但是没有html编码,适合输出html代码

 实例

jquery tmpl 详解_jquery

<div id="div_html"></div>
<script id="html" type="text/x-jquery-tmpl">
<div style="margin-bottom:10px;">
    <span>${ID}</span>
    <span style="margin-left:10px;">{{= Name}}</span>
  ${html}
  {{html html}}
</div>
</script>
<script type="text/javascript">
  var user = { ID: 'think8848', Name: 'Joseph Chan', html: '<button>html</button>' };
 $("#html").tmpl(user).appendTo('#div_html');
</script>
<span>${ID}</span>
<span style="margin-left:10px;">{{= Name}}</span>
  ${html}
  {{html html}}
</div>
</script>
<script type="text/javascript">
  var user = { ID: 'think8848', Name: 'Joseph Chan', html: '<button>html</button>' };
 $("#html").tmpl(user).appendTo('#div_html');
</script>

jquery tmpl 详解_jquery


{{tmpl}}​ 嵌套模版

实例

jquery tmpl 详解_jquery

<div id="tmpl"></div>
<script id="tmpl1" type="text/x-jquery-tmpl">
<div style="margin-bottom:10px;">
  <span>${ID}</span>
  <span style="margin-left:10px;">{{tmpl($data) '#tmpl2'}}</span>
</div>
</script>
<script id="tmpl2" type="type/x-jquery-tmpl">
{{each Name}}${$value} {{/each}}
</script>
<script type="text/javascript">
  var users = [{ ID: 'think8848', Name: ['Joseph', 'Chan'] }, { ID: 'aCloud', Name: ['Mary', 'Cheung']}];
$("#tmpl1").tmpl(users).appendTo('#tmpl');
</script>

jquery tmpl 详解_jquery


{{wrap}}​,包装器

实例


jquery tmpl 详解_jquery

<div id="wrapDemo">
</div>
<script id="myTmpl" type="text/x-jquery-tmpl">
The following wraps and reorders some HTML content:
{{wrap "#tableWrapper"}}
<h3>One</h3>
<div>
First <b>content</b>
</div>
<h3>Two</h3>
<div>
And <em>more</em> <b>content</b>...
</div>
{{/wrap}}
</script>
<script id="tableWrapper" type="text/x-jquery-tmpl">
<table cellspacing="0" cellpadding="3" border="1"><tbody>
<tr>
{{each $item.html("h3", true)}}
<td>
${$value}
</td>
{{/each}}
</tr>
<tr>
{{each $item.html("div")}}
<td>
{{html $value}}
</td>
{{/each}}
</tr>
</tbody></table>
</script>
<script type="text/javascript">
$(function () {
$('#myTmpl').tmpl().appendTo('#wrapDemo');
});
</script>

jquery tmpl 详解_jquery




$data $item​ $item代表当前的模板;$data代表当前的数据。


 实例:

jquery tmpl 详解_jquery

<div id="div_item_data"></div>
<script id="item_data" type="text/x-jquery-tmpl">
<div style="margin-bottom:10px;">
    <span>${$data.ID}</span>
    <span style="margin-left:10px;">${$item.getName(" ")}</span>
   </div>
</script>
<script type="text/javascript">
  var users = [{ ID: 'think8848', Name: ['Joseph', 'Chan'] }, { ID: 'aCloud', Name: ['Mary', 'Cheung']}];
$("#item_data").tmpl(users,
{
getName: function (spr) {
return this.data.Name.join(spr);
}
}).appendTo('#div_item_data');
</script>

jquery tmpl 详解_jquery


 ​$.tmplItem()​方法,使用这个方法,可以获取从render出来的元素上重新获取$item

实例

<script type="text/javascript">
  $('#demo').delegate('div', 'click', function () {
var item = $.tmplItem(this);
alert(item.data.Name);
});
</script>



<div id="div_demo">
</div>
<script id="demo" type="text/x-jquery-tmpl">
<div style="margin-bottom:10px;">
  <span>${ID}</span>
  <span style="margin-left:10px;">{{= Name}}</span>
  <span style="margin-left:10px;">${Number(Num)+1}</span>
  <span style="margin-left:10px;">${Status}</span>
</div>
</script>
<script type="text/javascript">
  var users = [{ ID: 'think8848', Name: 'Joseph Chan', Num: '1', Status: 1 }, { ID: 'aCloud', Name: 'Mary Cheung', Num: '2'}];
  $("#demo").tmpl(users).appendTo('#div_demo');
</script>

jquery tmpl 详解_jquery




{{each}}​ 提供循环逻辑,$value访问迭代变量 也可以自定义迭代变量(i,value)

示例:

jquery tmpl 详解_jquery

<div id="div_each">
</div>
<script id="each" type="text/x-jquery-tmpl">
<h3>users</h3>
{{each(i,user) users}}
<div>${i+1}:{{= user.name}}</div>
{{if i==0}}
<h4>group</h4>
{{each(j,group) groups}}
<div>${group.name}</div>
{{/each}}
{{/if}}
{{/each}}
<h3>depart</h3>
{{each departs}}
<div>{{= $value.name}}</div>
{{/each}}
</script>
<script type="text/javascript">
  var eachData = { users: [{ name: 'jerry' }, { name: 'john'}], groups: [{ name: 'mingdao' }, { name: 'meihua' }, { name: 'test'}], departs: [{ name: 'IT'}] };
  $("#each").tmpl(eachData).appendTo('#div_each');
</script>

jquery tmpl 详解_jquery



{{if }} {{else}}​提供了分支逻辑 {{else}} 相当于else if

示例:


jquery tmpl 详解_jquery

<div id="div_ifelse"></div>
<script id="ifelse" type="text/x-jquery-tmpl">
<div style="margin-bottom:10px;"><span>${ID}</span><span style="margin-left:10px;">{{= Name}}</span>
{{if Status}}
<span>Status${Status}</span>
{{else App}}
<span>App${App}</span>
{{else}}
<span>None</span>
{{/if}}
</div>
</script>
<script type="text/javascript">
  var users = [{ ID: 'think8848', Name: 'Joseph Chan', Status: 1, App: 0 }, { ID: 'aCloud', Name: 'Mary Cheung', App: 1 }, { ID: 'bMingdao', Name: 'Jerry Jin'}];
$("#ifelse").tmpl(users).appendTo('#div_ifelse');
</script>

jquery tmpl 详解_jquery


{{html}}​ 输出变量html,但是没有html编码,适合输出html代码

 实例

jquery tmpl 详解_jquery

<div id="div_html"></div>
<script id="html" type="text/x-jquery-tmpl">
<div style="margin-bottom:10px;">
<span>${ID}</span>
<span style="margin-left:10px;">{{= Name}}</span>
  ${html}
  {{html html}}
</div>
</script>
<script type="text/javascript">
  var user = { ID: 'think8848', Name: 'Joseph Chan', html: '<button>html</button>' };
 $("#html").tmpl(user).appendTo('#div_html');
</script>

jquery tmpl 详解_jquery


{{tmpl}}​ 嵌套模版

实例

jquery tmpl 详解_jquery

<div id="tmpl"></div>
<script id="tmpl1" type="text/x-jquery-tmpl">
<div style="margin-bottom:10px;">
  <span>${ID}</span>
  <span style="margin-left:10px;">{{tmpl($data) '#tmpl2'}}</span>
</div>
</script>
<script id="tmpl2" type="type/x-jquery-tmpl">
{{each Name}}${$value} {{/each}}
</script>
<script type="text/javascript">
  var users = [{ ID: 'think8848', Name: ['Joseph', 'Chan'] }, { ID: 'aCloud', Name: ['Mary', 'Cheung']}];
$("#tmpl1").tmpl(users).appendTo('#tmpl');
</script>

jquery tmpl 详解_jquery


{{wrap}}​,包装器

实例


jquery tmpl 详解_jquery

<div id="wrapDemo">
</div>
<script id="myTmpl" type="text/x-jquery-tmpl">
The following wraps and reorders some HTML content:
{{wrap "#tableWrapper"}}
<h3>One</h3>
<div>
First <b>content</b>
</div>
<h3>Two</h3>
<div>
And <em>more</em> <b>content</b>...
</div>
{{/wrap}}
</script>
<script id="tableWrapper" type="text/x-jquery-tmpl">
<table cellspacing="0" cellpadding="3" border="1"><tbody>
<tr>
{{each $item.html("h3", true)}}
<td>
${$value}
</td>
{{/each}}
</tr>
<tr>
{{each $item.html("div")}}
<td>
{{html $value}}
</td>
{{/each}}
</tr>
</tbody></table>
</script>
<script type="text/javascript">
$(function () {
$('#myTmpl').tmpl().appendTo('#wrapDemo');
});
</script>

jquery tmpl 详解_jquery




$data $item​ $item代表当前的模板;$data代表当前的数据。


 实例:

jquery tmpl 详解_jquery

<div id="div_item_data"></div>
<script id="item_data" type="text/x-jquery-tmpl">
<div style="margin-bottom:10px;">
    <span>${$data.ID}</span>
    <span style="margin-left:10px;">${$item.getName(" ")}</span>
   </div>
</script>
<script type="text/javascript">
  var users = [{ ID: 'think8848', Name: ['Joseph', 'Chan'] }, { ID: 'aCloud', Name: ['Mary', 'Cheung']}];
$("#item_data").tmpl(users,
{
getName: function (spr) {
return this.data.Name.join(spr);
}
}).appendTo('#div_item_data');
</script>

jquery tmpl 详解_jquery


 ​$.tmplItem()​方法,使用这个方法,可以获取从render出来的元素上重新获取$item

实例

<script type="text/javascript">
  $('#demo').delegate('div', 'click', function () {
var item = $.tmplItem(this);
alert(item.data.Name);
});
</script>


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