### 返回值:Array<Element(s)>:lt(index)
### 概述
匹配所有小于给定索引值的元素
### 参数
#### **index**Number*V1.0*
从 0 开始计数
### 示例
#### 描述:
查找第一第二行，即索引值是0和1，也就是比2小
##### HTML 代码:
~~~
<table>
<tr><td>Header 1</td></tr>
<tr><td>Value 1</td></tr>
<tr><td>Value 2</td></tr>
</table>
~~~
##### jQuery 代码:
~~~
$("tr:lt(2)")
~~~
##### 结果:
~~~
[ <tr><td>Header 1</td></tr>, <tr><td>Value 1</td></tr> ]
~~~
- 速查表
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