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jquery add or move node on target node

无忌哥哥
无忌哥哥Original
2018-06-29 14:26:101362browse

jquery adds or moves nodes on the target node 

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>在目标节点上添加或移动节点</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>append()</button>
<button>prepend()</button>
<button>after()</button>
<button>before()</button>
<p style="background-color: orange;width: 300px;">我是要被append()移动的节点1</li>
<p style="background-color: orange;width: 300px;">我是要被prepend()移动的节点2</li>
<p style="background-color: orange;width: 300px;">我是要被after()移动的节点3</li>
<p style="background-color: orange;width: 300px;">我是要被before()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: After inserting into the node content: append()

* 3.2: Before inserting into the node content: prepend()

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

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

* 1.append()

* Syntax: target.append(content)

* Parameter: Node to be added or moved

* 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append()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
$(&#39;ul&#39;).append(li)
//2.移动操作(请将添加操作的代码注释掉)
// $(&#39;ul&#39;).append($(&#39;p:first&#39;))
})

* 2.prepend()

* Syntax: target.prepend(content)

* Parameters: Node to be added or moved

* Function: Insert into In 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prepend()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
$(&#39;ul&#39;).prepend(li)
//2.移动操作(请将添加操作的代码注释掉)
// $(&#39;ul&#39;).prepend($(&#39;p:eq(1)&#39;))
})

* 3.after()

* Syntax: target.after(content)

* 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after()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
$(&#39;ul&#39;).after(p)
// $(&#39;li:eq(1)&#39;).after(p)
//2.移动操作(请将添加操作的代码注释掉)
// $(&#39;ul&#39;).after($(&#39;p:eq(2)&#39;))
// $(&#39;li:eq(1)&#39;).after($(&#39;p:eq(2)&#39;))
})

* 4.before()

* Syntax: target.after(content)

* Parameters: To insert 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before()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
$(&#39;ul&#39;).before(p)
// $(&#39;li:eq(2)&#39;).before(p)
//2.移动操作(请将添加操作的代码注释掉)
// $(&#39;ul&#39;).before($(&#39;p:eq(3)&#39;))
// $(&#39;li:eq(2)&#39;).before($(&#39;p:eq(3)&#39;))
})

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