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1, insertBefore(), insertAfter(), prependTo(), appendTo() these four functions are almost the same in usage

2, In contrast, there are four functions: Before(),After(),prepend(),append()

1, jQuery.insertAfter() Detailed explanation of function(The other three refer to their usage)

##insertAfter() The function is used to insert all current matching elements after the specified element.

Relative to this function is the insertBefore() function, which is used to insert all current matching elements before the specified element .

jQuery object (instance).

jQueryObject.insertAfter( target )

is a string type, it is treated as a jQuery selector or html content string, jQuery I will make my own judgment. Return value

The return value of the functionisjQuery Type that returns a jQuery object representing the inserted content. Note: If the elements matched by the current jQuery object are certain elements in the current page, then these elements will

from their original positions. In short, this is equivalent to a move operation, not a copy operation. Example & Description

function is used to insert all matching elements into the specified element Position after :

<span class="tag" style="font-size: 18px;"><p><span class="pln">段落文本1<span class="tag"><span></span></p><span class="pln"><br/><span class="tag"><p><span class="pln">段落文本2<span class="tag"><span></span></p><span class="pln"><br/><br/><span class="com"><!--以上是jQuery代码执行前的html内容--><span class="pln"><br/><span class="tag"><script<span class="pln"> <span class="atn">type<span class="pun">=<span class="atv">"text/<a href="//m.sbmmt.com/wiki/48.html" target="_blank">javascript</a>"<span class="tag">><span class="pln"><br/>$<span class="pun">(<span class="str">&#39;<!--插入到p元素之后的位置-->&#39;<span class="pun">).<span class="pln">insertAfter<span class="pun">(<span class="pln"> <span class="str">"p"<span class="pln"> <span class="pun">);<span class="pln"><br/><span class="com">// 其返回值就是匹配插入内容(两个注释元素&#39;<!--插入到p元素之后的位置-->&#39;)的jQuery对象<span class="pln"><br/><span class="tag"></script><span class="pln"><br/><span class="com"><!--以下是jQuery代码执行后的html内容--><span class="pln"><br/><br/><span class="tag"><p><span class="pln">段落文本1<span class="tag"><span></span></p><span class="com"><!--插入到p元素之后的位置--><span class="pln"><br/><span class="tag"><p><span class="pln">段落文本2<span class="tag"><span></span></p><span class="com"><!--插入到p元素之后的位置--></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

function and the after() function:

<span class="kwd" style="font-size: 18px; color: #0000ff;">var<span class="pln"> $A <span class="pun">=<span class="pln"> $<span class="pun">(<span class="str">"s1"<span class="pun">);<span class="pln"><br/><span class="kwd">var<span class="pln"> $B <span class="pun">=<span class="pln"> $<span class="pun">(<span class="str">"s2"<span class="pun">);<span class="pln"><br/><br/><span class="com">// 将$A插入到$B之后<span class="pln"><br/>$A<span class="pun">.<span class="pln">insertAfter<span class="pun">(<span class="pln"> $B <span class="pun">);<span class="pln"> <span class="com">// 返回表示插入内容的jQuery对象( 匹配所有$B之后插入的$A元素 )<span class="pln"><br/><span class="com">// 将$B插入到$A之后<span class="pln"><br/>$A<span class="pun">.<span class="pln">after<span class="pun">(<span class="pln"> $B <span class="pun">);<span class="pln"> <span class="com">// 返回$A</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

<span class="tag" style="font-size: 18px;"><p<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n1"<span class="tag">><span class="pln"><br/>    <span class="tag"><span<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n2"<span class="tag">><span class="pln">span#n2<span class="tag"></span><span class="pln">    <br/><span class="tag"></p><span class="pln"><br/><span class="tag"><p<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n3"<span class="tag">><span class="pln"><br/>    <span class="tag"><label<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n4"<span class="pln"> <span class="atn">class<span class="pun">=<span class="atv">"move"<span class="tag">><span class="pln">label#n4<span class="tag"></label><span class="pln"><br/><span class="tag"></p><span class="pln"><br/><span class="tag"><p<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n5"<span class="tag">><span class="pln"><br/>    <span class="tag"><span<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n6"<span class="tag">><span class="pln">span#n6<span class="tag"></span><span class="pln"><br/><span class="tag"></p></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

Specific usage of the function: <pre class='brush:php;toolbar:false;'>&lt;span class=&quot;com&quot; style=&quot;font-size: 18px;&quot;&gt;// 将一个自定义的i元素插入到n4之后&lt;span class=&quot;pln&quot;&gt;&lt;br/&gt;$&lt;span class=&quot;pun&quot;&gt;(&lt;span class=&quot;str&quot;&gt;&amp;#39;&lt;i&gt;i元素&lt;/i&gt;&amp;#39;&lt;span class=&quot;pun&quot;&gt;).&lt;span class=&quot;pln&quot;&gt;insertAfter&lt;span class=&quot;pun&quot;&gt;(&lt;span class=&quot;pln&quot;&gt; &lt;span class=&quot;str&quot;&gt;&quot;#n4&quot;&lt;span class=&quot;pln&quot;&gt; &lt;span class=&quot;pun&quot;&gt;);&lt;span class=&quot;pln&quot;&gt;&lt;br/&gt;&lt;br/&gt;&lt;span class=&quot;com&quot;&gt;// 将n4插入到n2之后&lt;span class=&quot;pln&quot;&gt;&lt;br/&gt;&lt;span class=&quot;com&quot;&gt;// n4将从原位置上消失&lt;span class=&quot;pln&quot;&gt;&lt;br/&gt;$&lt;span class=&quot;pun&quot;&gt;(&lt;span class=&quot;str&quot;&gt;&amp;#39;#4&amp;#39;&lt;span class=&quot;pun&quot;&gt;).&lt;span class=&quot;pln&quot;&gt;insertAfter&lt;span class=&quot;pun&quot;&gt;(&lt;span class=&quot;pln&quot;&gt; document&lt;span class=&quot;pun&quot;&gt;.&lt;span class=&quot;pln&quot;&gt;getElementById&lt;span class=&quot;pun&quot;&gt;(&lt;span class=&quot;str&quot;&gt;&quot;n2&quot;&lt;span class=&quot;pun&quot;&gt;)&lt;span class=&quot;pln&quot;&gt; &lt;span class=&quot;pun&quot;&gt;);&lt;span class=&quot;pln&quot;&gt;&lt;br/&gt;&lt;br/&gt;&lt;span class=&quot;com&quot;&gt;//将一个自定义的strong元素插入到每个span元素之后&lt;span class=&quot;pln&quot;&gt;&lt;br/&gt;$&lt;span class=&quot;pun&quot;&gt;(&lt;span class=&quot;str&quot;&gt;&quot;&lt;strong&gt;插入文本&lt;/strong&gt;&quot;&lt;span class=&quot;pun&quot;&gt;).&lt;span class=&quot;pln&quot;&gt;insertAfter&lt;span class=&quot;pun&quot;&gt;(&lt;span class=&quot;pln&quot;&gt; &lt;span class=&quot;str&quot;&gt;&quot;span&quot;&lt;span class=&quot;pln&quot;&gt; &lt;span class=&quot;pun&quot;&gt;);&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;</pre>Run the code

##insertAfter()

closing tag , will not add any additional whitespace characters . The complete html code after the above code is executed is as follows (no adjustment to the format):

<span class="tag" style="font-size: 18px;"><p<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n1"<span class="tag">><span class="pln"><br/>    <span class="tag"><span<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n2"<span class="tag">><span class="pln">span#n2<span class="tag"></span><strong><span class="pln">插入文本<span class="tag"></strong><span class="pln">    <br/><span class="tag"></p><span class="pln"><br/><span class="tag"><p<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n3"<span class="tag">><span class="pln"><br/>    <span class="tag"><label<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n4"<span class="pln"> <span class="atn">class<span class="pun">=<span class="atv">"move"<span class="tag">><span class="pln">label#n4<span class="tag"></label><i><span class="pln">i元素<span class="tag"></i><span class="pln"><br/><span class="tag"></p></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

after()

insert specified content after each matching element. The specified content can be: html string, DOM element (or array), jQuery object, function (return value).

Relative to this function is the before() function, which is used to insert specified content before each matching element

This function belongs to the jQuery object (instance).

Syntax

jQueryObject.after( content1 [, content2 [, contentN ]] )

Parameters

<span class="tag" style="font-size: 14pt;"><p><span class="pln">段落文本1<span class="tag"><span></span></p><span class="com"><!--插入到p元素之后的位置--><span class="pln"><br/><span class="tag"><p><span class="pln">段落文本2<span class="tag"><span></span></p><span class="com"><!--插入到p元素之后的位置--><span class="pln"><br/><br/><br/><span class="tag"><script<span class="pln"> <span class="atn">type<span class="pun">=<span class="atv">"text/javascript"<span class="tag">><span class="pln"><br/>$<span class="pun">(<span class="str">"p"<span class="pun">).<span class="pln">after<span class="pun">(<span class="pln"> <span class="str">&#39;<!--插入到p元素之后的位置-->&#39;<span class="pln"> <span class="pun">);<span class="pln"> <br/><span class="tag"></script></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

<span class="kwd" style="font-size: 14pt;">var<span class="pln"> $A <span class="pun">=<span class="pln"> $<span class="pun">(<span class="str">"s1"<span class="pun">);<span class="pln"><br/><span class="kwd">var<span class="pln"> $B <span class="pun">=<span class="pln"> $<span class="pun">(<span class="str">"s2"<span class="pun">);<span class="pln"><br/><br/><br/><span class="com">// 将$B插入到$A之后<span class="pln"><br/>$A<span class="pun">.<span class="pln">after<span class="pun">(<span class="pln"> $B <span class="pun">);<span class="pln"> <span class="com">// 返回$A<span class="pln"><br/><span class="com">// 将$A插入到$B之后<span class="pln"><br/>$A<span class="pun">.<span class="pln">insertAfter<span class="pun">(<span class="pln"> $B <span class="pun">);<span class="pln"> <span class="com">// 返回表示插入内容的jQuery对象( 匹配所有$B之后插入的$A元素 )</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

<span class="tag" style="font-size: 14pt;"><p<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n1"<span class="tag">><span class="pln"><br/>    <span class="tag"><span<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n2"<span class="tag">><span class="pln">span#n2<span class="tag"></span><span class="pln">    <br/><span class="tag"></p><span class="pln"><br/><span class="tag"><p<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n3"<span class="tag">><span class="pln"><br/>    <span class="tag"><label<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n4"<span class="tag">><span class="pln">label#n4<span class="tag"></label><span class="pln"><br/>    <span class="tag"><i<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n5"<span class="tag">><span class="pln">i#n5<span class="tag"></i><span class="pln"><br/><span class="tag"></p></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

<span class="com" style="font-size: 14pt;">// 在n4之后插入一个自定义的span元素<span class="pln"><br/>$<span class="pun">(<span class="str">"#n4"<span class="pun">).<span class="pln">after<span class="pun">(<span class="str">&#39;<span id="n6">span#n6(new)</span>&#39;<span class="pun">);<span class="pln"><br/><br/><span class="com">// 在n2之后插入n5<span class="pln"><br/><span class="com">// n5将从原位置上消失<span class="pln"><br/>$<span class="pun">(<span class="str">"#n2"<span class="pun">).<span class="pln">after<span class="pun">(<span class="pln"> document<span class="pun">.<span class="pln">getElementById<span class="pun">(<span class="str">"n5"<span class="pun">)<span class="pln"> <span class="pun">);<span class="pln"><br/><br/><span class="com">// 在每个span元素之后插入自定义的strong元素<span class="pln"><br/>$<span class="pun">(<span class="str">"span"<span class="pun">).<span class="pln">after<span class="pun">(<span class="pln"> <span class="kwd">function<span class="pun">(<span class="pln">index<span class="pun">,<span class="pln"> innerHTML<span class="pun">){<span class="pln"><br/>    <span class="kwd">return<span class="pln"> <span class="str">&#39;<strong>strong元素&#39;<span class="pln"> <span class="pun">+<span class="pln"> <span class="pun">(<span class="pln">index <span class="pun">+<span class="pln"> <span class="lit">1<span class="pun">)<span class="pln"> <span class="pun">+<span class="pln"> <span class="str">&#39;</strong>&#39;<span class="pun">;<span class="pln"><br/><span class="pun">}<span class="pln"> <span class="pun">);</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

<span class="tag" style="font-size: 14pt;"><p<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n1"<span class="tag">><span class="pln"><br/>    <span class="tag"><span<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n2"<span class="tag">><span class="pln">span#n2<span class="tag"></span><strong><span class="pln">strong元素1<span class="tag"></strong><i<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n5"<span class="tag">><span class="pln">i#n5<span class="tag"></i><span class="pln">    <br/><span class="tag"></p><span class="pln"><br/><span class="tag"><p<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n3"<span class="tag">><span class="pln"><br/>    <span class="tag"><label<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n4"<span class="tag">><span class="pln">label#n4<span class="tag"></label><span<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n6"<span class="tag">><span class="pln">span#n6(new)<span class="tag"></span><strong><span class="pln">strong元素2<span class="tag"></strong><span class="pln"><br/>    <br/><span class="tag"></p></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

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