jquery之replaceAll(),replaceWith()方法详解

jQueryObject.replaceAll( target )

<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="//m.sbmmt.com/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>

<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>

<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>

<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>

jQueryObject.replaceWith( replacement )

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

// 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/>} );

 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]

<br/><br/>