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Usage examples and precautions when the selector contains spaces_jquery
Web Front-end
JS Tutorial
Usage examples and precautions when the selector contains spaces_jquery
Usage examples and precautions when the selector contains spaces_jquery
May 16, 2016 pm 05:27 PM
space
Selector
Principle explanation:
var $t_a=$(".test :hidden") //The space indicates that the class is selected as the hidden element in test;
var $t_a =$(".test:hidden")//Without spaces, it means selecting hidden elements with class test;
Example:
<html>
<head>
<script type=" text/javascript" src="jquery-1.3.2.min.js"></script>
<script type="text/javascript">
$(document).ready(function (){
var $a1=$(".test :hidden");
var $a2=$(".test:hidden");
alert($a1.length " " $a2 .length)
})
</script>
<style>
</style>
</head>
<body>
< ;div class="test" style="display:none;">
<p style="display:none">dddddddd</p>
<p style="display:none" >dddddddd</p>
</div>
<div class="test" style="display:none">
</div><div class="test " style="display:none"></div>
<body>
</html>
The output results are: 2 and 3 respectively;
var $t_a=$(".test :hidden") //The space indicates that the class is selected as the hidden element in test;
var $t_a =$(".test:hidden")//Without spaces, it means selecting hidden elements with class test;
Example:
Copy code The code is as follows:
<html>
<head>
<script type=" text/javascript" src="jquery-1.3.2.min.js"></script>
<script type="text/javascript">
$(document).ready(function (){
var $a1=$(".test :hidden");
var $a2=$(".test:hidden");
alert($a1.length " " $a2 .length)
})
</script>
<style>
</style>
</head>
<body>
< ;div class="test" style="display:none;">
<p style="display:none">dddddddd</p>
<p style="display:none" >dddddddd</p>
</div>
<div class="test" style="display:none">
</div><div class="test " style="display:none"></div>
<body>
</html>
The output results are: 2 and 3 respectively;
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