detach() 删除节点并保存
<!DOCTYPE html>
<html>
<head>
<style>p { background:yellow; margin:6px 0; } p.off { background: black; }</style>
<script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
<p>Hello</p>
how are
<p>you?</p>
<button>Attach/detach paragraphs</button>
<script>
$("p").click(function(){
$(this).toggleClass("off");
});
var p;
$("button").click(function(){
if ( p ) {
p.appendTo("body");
p = null;
} else {
p = $("p").detach();
}
});</script>
</body>
</html>
empty() 删除节点的所有子节点包括文本节点
<!DOCTYPE html>
<html>
<head>
<style>
p { background:yellow; }
</style>
<script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
<p>
Hello, <span>Person</span> <a href="javascript:;">and person</a>
</p>
<button>Call empty() on above paragraph</button>
<script>
$("button").click(function () {
$("p").empty();
});
</script>
</body>
</html>
remove() 与detach一样是删除节点不同的是它不能保存会将节点上的事件一并删除
<!DOCTYPE html>
<html>
<head>
<style>p { background:yellow; margin:6px 0; }</style>
<script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
<p class="hello">Hello</p>
how are
<p>you?</p>
<button>Call remove(":contains('Hello')") on paragraphs</button>
<script>
$("button").click(function () {
$("p").remove(":contains('Hello')");
});
</script>
</body>
</html>
unwrap() 删除对象的父节点并保留在其父节点所在的位置
<!DOCTYPE html>
<html>
<head>
<style>
div { border: 2px solid blue; }
p { background:yellow; margin:4px; }
</style>
<script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
<button>wrap/unwrap</button>
<p>Hello</p>
<p>cruel</p>
<p>World</p>
<script>
$("button").hover(function(){
$("p").wrap("<div></div>");
}, function(){
$("p").unwrap();
});
</script>
</body>
</html>
