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jQuery- 删除或清空某个HTML元素

 
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jQuery使用下面两个方法来删除或是清空某个HTML元素。

           remove() – 删除指定的元素(包括其子元素)
           empty() – 清空指定元素的子元素

<!DOCTYPE html> 
<html> 
<head> 
<meta charset="utf-8"
<title>JQuery Demo</title> 
<script src="scripts/jquery-1.9.1.js"></script> 
<script> 
$(document).ready(function () { 
$("button").click(function () { 
$("#div1").remove(); 
}); 
}); 
</script> 
</head> 
<body> 
  
<div id="div1" style="height: 100px; width: 300px; 
border: 1px solid black; background-color: yellow;"
This is some text in the div. 
<p>This is a paragraph in the div.</p> 
<p>This is another paragraph in the div.</p> 
  
</div> 
<br> 
<button>Remove div element</button> 
  
</body> 
</html>
empty:
<!DOCTYPE html> 
<html> 
<head> 
<meta charset="utf-8"
<title>JQuery Demo</title> 
<script src="scripts/jquery-1.9.1.js"></script> 
<script> 
$(document).ready(function () { 
$("button").click(function () { 
$("#div1").empty(); 
}); 
}); 
</script> 
</head> 
<body> 
  
<div id="div1" style="height: 100px; width: 300px; 
border: 1px solid black; background-color: yellow;"
This is some text in the div. 
<p>This is a paragraph in the div.</p> 
<p>This is another paragraph in the div.</p> 
  
</div> 
<br> 
<button>Empty the div element</button> 
  
</body> 
</html>

jQuery的remove()方法也支持一个参数,可以用于过滤一些需要删除的HTML元素。这个参数可以为任何有效的jQuery selector.
比如下面代码只删除class=”italic”的<p>元素:

    
$("p").remove(".italic");
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