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Method: 1. Use append() to insert a content node at the end of the selected element; 2. Use prepend() to insert a content node at the beginning of the selected element; 3. Use appendTo() to insert a content node at the beginning of the selected element. Insert an element node at the end of the selected element; 4. Use prependTo() to insert an element node at the beginning of the selected element.
The operating environment of this tutorial: windows10 system, jquery2.2.4, this article is applicable to all brands of computers.
Related recommendations: "jQuery Video"
jquery method of adding nodes
Just take it This is a simple example to illustrate
##1. append method
<body>
<div>我是里面的div</div>
<p>我是外面p</p>
</body>
<script>
$(function(){
$("div").append($("p"));//添加到元素内容的后面
})
</script>
2. prepend method
<body>
<div>我是里面的div</div>
<p>我是外面p</p>
</body>
<script>
$(function(){
$("div").prepend($("p"));//添加到元素内容的前面
})
</script>
3. appendTo method
<body>
<div>我是里面的div</div>
<p>我是外面p</p>
</body>
<script>
$(function(){
$("p").appendTo($("div"));//子元素添加到父元素里,并且添加到父元素内容的后面面
})
</script> 
4. prependTo method
<body>
<div>我是里面的div</div>
<p>我是外面p</p>
</body>
<script>
$(function(){
$("p").prependTo($("div"));//子元素添加到父元素里,并且添加到父元素内容的前面
})
</script> 
5. after method
<body>
<div>我是里面的div</div>
<p>我是外面p</p>
</body>
<script>
$(function(){
$("div").after($("p"));//添加到自己的后面
})
</script>
6. before method
<body>
<div>我是里面的div</div>
<p>我是外面p</p>
</body>
<script>
$(function(){
$("div").before($("p"));//添加到自己的前面
})
</script> 
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