jquery selector

时间：2014-12-04 21:23:20 收藏：0 阅读：231

jquery的选择器功能

1 :lt(index) selector

一组元素选择index之前的元素，若index<0 则倒着选过来

http://api.jquery.com/lt-selector/

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>lt demo</title>
  <script src="//code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
 
<table border="1">
  <tr><td>TD #0</td><td>TD #1</td><td>TD #2</td></tr>
  <tr><td>TD #3</td><td>TD #4</td><td>TD #5</td></tr>
  <tr><td>TD #6</td><td>TD #7</td><td>TD #8</td></tr>
</table>
 
<script>
$( "td:lt(4)" ).css( "backgroundColor", "yellow" );
$( "td:lt(-2)" ).css( "color", "red" );
</script>
 
</body>
</html>