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jquery add or move node to target node

无忌哥哥Original: 2018-06-29 14:33:091924browse

jquery adds or moves nodes to the target node

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>将节点添加或移动到目标节点</title>
<style type="text/css">
li {
background-color: lightskyblue;
width: 300px;
margin-bottom: 5px;
}
</style>
</head>
<body>
<ul>
<li>列表项1</li>
<li>列表项2</li>
<li>列表项3</li>
<li>列表项4</li>
<li>列表项5</li>
</ul>
<button>appendTo()</button>
<button>prependTo()</button>
<button>insertAfter()</button>
<button>insertBefore()</button>
<p style="background-color: orange;width: 300px;">我是要被appendTo()移动的节点1</li>
<p style="background-color: orange;width: 300px;">我是要被prependTo()移动的节点2</li>
<p style="background-color: orange;width: 300px;">我是要被insertAfter()移动的节点3</li>
<p style="background-color: orange;width: 300px;">我是要被insertBefore()()移动的节点4</li>
</body>
</html>

* 1. Insertion position:

* 1.1: Before and after the node content

* 1.2: Before and after the node

* 2. Node to be inserted:

* 2.1: For newly created nodes: call the add operation

* 2.2: For existing nodes: call the move operation

* 3. So there should be four corresponding methods

* 3.1: Insert after node content: appendTo()

* 3.2: Insert before node content: prependTo()

* 3.3: After inserting into the node: InsertAfter()

* 3.3: Before inserting into the node: InsertBefore() *

* 1.appendTo()

* Syntax: content.appendTo(target)

* Parameters: The node to be added or moved to

* Function: Insert after the content of the target element

$(&#39;button&#39;).eq(0).on(&#39;click&#39;,function(){
//1. 添加操作
//第一步: 生成节点元素,添加内容,并设置样式
var li = $(&#39;<li>&#39;).css(&#39;background-color&#39;,&#39;lightgreen&#39;).html(&#39;我是appendTo()新生成的节点1&#39;)
//第二点: 将新节点插入到目标节点内容的后面
li.appendTo($(&#39;ul&#39;))
//2.移动操作(请将添加操作的代码注释掉)
// $(&#39;p:first&#39;).appendTo($(&#39;ul&#39;))
})

* 2.prependTo()

* Syntax: content.prepend(target)

* Parameter: Node to be added or moved

* Function: Insert To the front of the content of the target element

$(&#39;button&#39;).eq(1).on(&#39;click&#39;,function(){
//1. 添加操作
//第一步: 生成节点元素,添加内容,并设置样式
// var li = $(&#39;<li>&#39;).css(&#39;background-color&#39;,&#39;lightgreen&#39;).html(&#39;我是prependTo()新生成的节点2&#39;)
//第二点: 将新节点插入到目标节点内容的后面
// li.prependTo($(&#39;ul&#39;))
//2.移动操作(请将添加操作的代码注释掉)
$(&#39;p:eq(1)&#39;).prependTo($(&#39;ul&#39;))
})

* 3.insertAfter()

* Syntax: content.after(target)

* Parameters: The node to be inserted

* Function: Insert behind the target node

$(&#39;button&#39;).eq(2).on(&#39;click&#39;,function(){
//1. 添加操作
//第一步: 生成节点元素,添加内容,并设置样式
var p = $(&#39;<li>&#39;).css(&#39;background-color&#39;,&#39;lightgreen&#39;).html(&#39;我是insertAfter()新生成的节点3&#39;)
//第二点: 将新节点插入到目标节点的后面
p.insertAfter($(&#39;ul&#39;))
// p.insertAfter($(&#39;li:eq(1)&#39;))
//2.移动操作(请将添加操作的代码注释掉)
////移动到<ul>之后
// $(&#39;p:eq(2)&#39;).insertAfter($(&#39;ul&#39;))
// //移动到第2个<li>之后
// $(&#39;p:eq(2)&#39;).insertAfter($(&#39;li:eq(1)&#39;))
})

* 4.InsertBefore()

* Syntax: content.insertBefore(target)

* Parameters: To Inserted node

* Function: Insert in front of the target element

$(&#39;button&#39;).eq(3).on(&#39;click&#39;,function(){
//1. 添加操作
//第一步: 生成节点元素,添加内容,并设置样式
var p = $(&#39;<li>&#39;).css(&#39;background-color&#39;,&#39;lightgreen&#39;).html(&#39;我是insertBefore()新生成的节点4&#39;)
//第二点: 将新节点插入到目标节点的后面
// p.insertBefore($(&#39;ul&#39;))
//插入到第3个<li>之前
// p.insertBefore($(&#39;li:eq(2)&#39;))
//2.移动操作(请将添加操作的代码注释掉)
//移动到<ul>之前
// $(&#39;p:eq(3)&#39;).insertBefore($(&#39;ul&#39;))
//移动到第3个<li>之前
$(&#39;p:eq(3)&#39;).insertBefore($(&#39;li:eq(2)&#39;))
})

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