Detailed explanation of jquery's replaceAll(),replaceWith() methods

replaceAll() The function is used to replace all target elements with the current matching element.

This function belongs to the jQuery object (instance).

Syntax

jQuery 1.2 Add this function.

jQueryObject.replaceAll( target )

Parameters

Parameters	Description
target	String/Element/jQuery/Array type is the target element to be replaced. These elements will be replaced by the current matching elements.

If the parameter target is a string, it is treated as a jQuery selector.

Return value

replaceAll()The return value of the function is of jQuery type, return represents the replacement content jQuery object.

All data and event handlers associated with the replaced node will also be removed.

Note: If an element matched by the current jQuery object is an element on the page, the element will disappear from its original position, which is equivalent to a move operation, not a copy operate.

Example & Description

replaceAll()The function is used to replace all target elements with the current matching element:

<span class="tag"><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="tag"><script<span class="pln"> <span class="atn">type<span class="pun">=<span class="atv">"text/<a href="http://www.php.cn/wiki/48.html" target="_blank">javascript</a>"<span class="tag">><span class="pln"><br/>$<span class="pun">(<span class="str">&#39;<em></em>&#39;<span class="pun">).<span class="pln">replaceAll<span class="pun">(<span class="pln"> <span class="str">"p"<span class="pln"> <span class="pun">);<span class="pln"><br/><span class="com">// 其返回值就是匹配替换内容(两个&#39;<em></em>&#39;)的jQuery对象<span class="pln"><br/><span class="tag"></script><span class="pln"><br/><br/><span class="com"><!--以下是jQuery代码执行后的html内容--><span class="pln"><br/><span class="tag"><em></em><span class="pln"><br/><span class="tag"><em></em></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>

Please note the difference between replaceAll() and replaceWith() functions:

<span class="kwd">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替换成$A<span class="pln"><br/>$A<span class="pun">.<span class="pln">replaceAll<span class="pun">(<span class="pln"> $B <span class="pun">);<span class="pln"> <span class="com">// 返回表示替换内容的jQuery对象( 匹配替换掉$B的所有$A元素 )<span class="pln"><br/><span class="com">// 将$A替换成$B<span class="pln"><br/>$A<span class="pun">.<span class="pln">replaceWith<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>

Please refer to the following HTML code (original HTML code):

<span class="tag"><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">foo<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"><span<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n5"<span class="tag">><span class="pln">bar<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">"n6"<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>

The following jQuery sample code, used to demonstrate the specific usage of the replaceAll() function:

<span class="com">// 用em元素替换掉所有的span元素<span class="pln"><br/>$<span class="pun">(<span class="str">&#39;<em class="new">替代元素</em>&#39;<span class="pun">).<span class="pln">replaceAll<span class="pun">(<span class="pln"> <span class="str">"span"<span class="pln"> <span class="pun">);<span class="pln"><br/><br/><span class="com">// 用n4替换掉n6<span class="pln"><br/><span class="com">// n4将从原位置上消失(替换到n6的位置)<span class="pln"><br/>$<span class="pun">(<span class="str">"#n4"<span class="pun">).<span class="pln">replaceAll<span class="pun">(<span class="pln"> $<span class="pun">(<span class="str">"#n6"<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>

Run the code

The following is the html content after the jQuery code is executed (the format has not been modified in any way Adjustments):

<span class="tag"><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"><em<span class="pln"> <span class="atn">class<span class="pun">=<span class="atv">"new"<span class="tag">><span class="pln">替代元素<span class="tag"></em><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/>    <br/>    <span class="tag"><em<span class="pln"> <span class="atn">class<span class="pun">=<span class="atv">"new"<span class="tag">><span class="pln">替代元素<span class="tag"></em><span class="pln"><br/><span class="tag"></p><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><br/><br/><strong><span style="font-size: 18pt;"><span style="color: #ff0000;">二：replaceWith()</span><br/></span></strong></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>

replaceWith() function is used to replace each matching element with the specified element.

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This function belongs to the jQuery object (instance).

<br/>

Syntax

<br/>

jQuery 1.2 Add this function.

<br/>

jQueryObject.replaceWith( replacement )

<br/>

Parameters

<br/>

Parameters	Description
replacement	String/Element/jQuery/Function type is used for replaced elements.

<br/>

If the parameter replacement is a string, it will be treated as a html string.

<br/>

jQuery 1.4 New support: Parameter replacement can be a function. replaceWith() will traverse and execute this function based on all matching elements, and this in the function will point to the corresponding DOM element.

<br/>

replaceWith() will also pass in two parameters to the function: the first parameter is the of the current element in the matching element Index , the second parameter is the current internal html content (innerHTML) of the element. The return value of the function is the content used for replacement (can be an html string, DOM element, or jQuery object).

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Return value

<br/>

replaceWith()The return value of the function is jQuery type, returns the current jQuery object itself (although its The matching element has been removed from the document).

<br/>

All data and event handlers associated with the replaced node will also be removed.

<br/>

Note: If the replacement element is an element in the current page, the element will disappear from its original position. This is equivalent to a move operation, not a copy operation.

<br/>

Example & Description

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replaceWith()The function is used to wrap the specified element outside all the content of each matched element:

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段落文本1
<br/>
段落文本2
<br/><br/> type="text/javascript"><br/>$("p").replaceWith( '' ); <br/><br/><br/><br/><br/>

<br/>

Please note the difference between replaceWith() and replaceAll() functions:

<br/>

var $A = $("s1");<br/>var $B = $("s2");<br/><br/><br/>// 将$A替换成$B<br/>$A.replaceWith( $B ); // 返回$A<br/>// 将$B替换成$A<br/>$A.replaceAll( $B ); // 返回表示替换内容的jQuery对象( 匹配替换掉$B的所有$A元素 )

<br/>

Please refer to the following HTML code (original HTML code):

<br/>

<span class="tag"><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">foo<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"><span<span class="pln"> <span class="atn">id<span class="pun">=<span class="atv">"n5"<span class="tag">><span class="pln">bar<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">"n6"<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>

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The following jQuery sample code is used to demonstrate the specific usage of the replaceWith() function:

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// 将所有span元素替换为指定的em元素<br/>$("span").replaceWith( '替代元素' );<br/><br/>// 将n6替换为n4<br/>// n4将从原位置上消失<br/>$("#n6").replaceWith( $("#n4") );<br/><br/>// 将所有p元素替换为p元素<br/>$("p").replaceWith( function(i, innerHTML){<br/>    return '
 + (i + 1) + '">' + innerHTML + '
';       <br/>} );

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Run the code

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The following is the html after the jQuery code is executed Content (without any adjustment to the format):

<br/>

 class="thread-1"><br/>     class="new">替代元素    <br/>
<br/> class="thread-2"><br/>    <br/>     class="new">替代元素<br/>
<br/> id="n4">[label#n4]

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