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 ${}里面还可以放表达式
(=和变量之间一定要有空格,否则无效)
示例:
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<div id= "div_demo" >
</div>
<script id= "demo"
type= "text/x-jquery-tmpl" >
<div style= "margin-bottom:10px;" >
<span>${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‘ }];
$( "#demo" ).tmpl(users).appendTo( ‘#div_demo‘ );
</script>
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{{each}} 提供循环逻辑,$value访问迭代变量
也可以自定义迭代变量(i,value)
示例:
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<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‘ }] };
$( "#each" ).tmpl(eachData).appendTo( ‘#div_each‘ );
</script>
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{{if }} {{else}}提供了分支逻辑
{{else}} 相当于else if
示例:
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<div id= "div_ifelse" ></div>
<script id= "ifelse"
type= "text/x-jquery-tmpl" >
<div style= "margin-bottom:10px;" ><span>${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‘ }];
$( "#ifelse" ).tmpl(users).appendTo( ‘#div_ifelse‘ );
</script>
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{{html}} 输出变量html,但是没有html编码,适合输出html代码
实例
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<div id= "div_html" ></div>
<script id= "html"
type= "text/x-jquery-tmpl" >
<div style= "margin-bottom:10px;" >
<span>${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>‘
};
$( "#html" ).tmpl(user).appendTo( ‘#div_html‘ );
</script>
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{{tmpl}} 嵌套模版
实例
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<div id= "tmpl" ></div>
<script id= "tmpl1"
type= "text/x-jquery-tmpl" >
<div style= "margin-bottom:10px;" >
<span>${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>
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{{wrap}},包装器
实例
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<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
() {
$( ‘#myTmpl‘ ).tmpl().appendTo( ‘#wrapDemo‘ );
});
</script>
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$data $item $item代表当前的模板;$data代表当前的数据。
实例:
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<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‘ ]}];
$( "#item_data" ).tmpl(users,
{
getName: function
(spr) {
return
this .data.Name.join(spr);
}
}).appendTo( ‘#div_item_data‘ );
</script>
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$.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
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<script type= "text/javascript" >
$( ‘#demo‘ ).delegate( ‘div‘ , ‘click‘ , function
() {
var
item = $.tmplItem( this );
alert(item.data.Name);
});
</script>
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jquery tmpl 详解(转),码迷,mamicode.com
时间: 2024-08-07 08:23:49