[英]Jquery or HTML problem? Why isn't my selector working?
当我单击“overview_table_header”class 时,以下 function 不会产生警报。 我究竟做错了什么?
<div class='overview_table_wrapper'>
<table>
<thead>
<tr>
<th class='col_1'>
<span class='overview_table_header' data-sort='DESC'>
Contest
</span>
<span class='arrow'>></span>
</th>
<th class='col_2'>
<span class='overview_table_header' data-sort='DESC'>
Tweets
</span>
<span class='arrow'></span>
</th>
<th class='col_3'>
<span class='overview_table_header' data-sort='DESC'>
Starts
</span>
<span class='arrow'></span>
</th>
<th class='col_4'>
<span class='overview_table_header' data-sort='DESC'>
Ends
</span>
<span class='arrow'></span>
</th>
</tr>
</thead>
.js 文件:
(我正在加载上面未显示的此文件;其他 jquery 使用此文件)
$('.overview_table_header').click(function() {
alert("clicked!");
});
1) 确保 jQuery.js 包含在页面中(在下面的代码片段之前)。
2)在ready事件中添加点击绑定并添加Script标签
<script type="text/javascript">
$(function(){
$('.overview_table_header').click(function() { alert("clicked!"); });
});
</script>
将此部分放在页面的 head 标签中
<script src='https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js'></script>
<script>
$(document).ready(function(){
$('.overview_table_header').click(function() {
alert("clicked!");
});
});
</script>
我不知道您的代码结构究竟如何,但这是一个有效的结构:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>jQuery Test</title>
<meta http-equiv="content-type" content="text/html;charset=utf-8" />
<meta name="generator" content="Geany 0.20" />
<script type="text/Javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js"></script>
<script type="text/Javascript">
$(document).ready(function(){
$('.overview_table_header').click(function() {
alert("clicked!");
});
});
</script>
</head>
<body>
<div class='overview_table_wrapper'>
<table>
<thead>
<tr>
<th class='col_1'>
<span class='overview_table_header' data-sort='DESC'>
Contest
</span>
<span class='arrow'>></span>
</th>
<th class='col_2'>
<span class='overview_table_header' data-sort='DESC'>
Tweets
</span>
<span class='arrow'></span>
</th>
<th class='col_3'>
<span class='overview_table_header' data-sort='DESC'>
Starts
</span>
<span class='arrow'></span>
</th>
<th class='col_4'>
<span class='overview_table_header' data-sort='DESC'>
Ends
</span>
<span class='arrow'></span>
</th>
</tr>
</thead>
</div>
</body>
</html>
有了您提供给我们的内容,这应该可以正常工作,但我想也许这张表也是用 javascript 生成的? 如果是这样,您将需要使用委托方法将侦听器分配给这些跨度标签
<script>
$('.overview_table_wrapper').delegate('.overview_table_header','click', function() {
alert("clicked!");
});
</script>
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