search

Home >Web Front-end >JS Tutorial >JQuery uses the index method to get the subscript of the Jquery object array_jquery

JQuery uses the index method to get the subscript of the Jquery object array_jquery

WBOY
WBOYOriginal
2016-05-16 15:58:392333browse

The example in this article describes how JQuery uses the index method to obtain the subscript of the Jquery object array. Share it with everyone for your reference. The specific implementation method is as follows: 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>index方法获取Jquery对象的数组下标</title>
<style type="text/css">
#main{
 width:600px;
 border:1px solid green;
 margin:auto;
 padding:10px;
}
#tbl{
 border-collapse:collapse;
 border-top:1px solid red;
 border-left:1px solid red;
 margin:auto;
}
#tbl td{
 width:60px;
 height:60px;
 border-collapse:collapse;
 border-bottom:1px solid red;
 border-right:1px solid red;
}
</style>
<script src="jquery-1.6.2.min.js" type="text/javascript"></script>
<script type="text/javascript">
var oldColor;
$(function () {
 $("#tbl tr").hover(
 function () {
  oldColor = $(this).css("backgroundColor");
  $(this).css("backgroundColor", "yellow");
 },
 function () {
  $(this).css("backgroundColor", oldColor);
 });
 $("#tbl tr").click(function () {
  alert($("#tbl tr").index($(this))); //获取元素下标
 });
});
</script>
</head>
<body>
<div id="main">
<table id="tbl">
 <tr>
  <td>1</td><td>1</td><td>1</td>
 </tr>
 <tr>
  <td class="tdClass">2</td><td>2</td><td>2</td>
 </tr>
 <tr>
  <td>3</td><td>3</td><td>3</td>
 </tr>
 <tr>
  <td>4</td><td>4</td><td class="tdClass">4</td>
 </tr>
 <tr>
  <td>5</td><td>5</td><td>5</td>
 </tr>
 <tr>
  <td>6</td><td>6</td><td class="tdClass">6</td>
 </tr>
</table>
</div>
</body>
</html>

I hope this article will be helpful to everyone’s jQuery programming.

Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：TypeError document.getElementById(...) is null error reason_javascript skillsNext article：TypeError document.getElementById(...) is null error reason_javascript skills

Related articles

See more