blocks|key|2678835|text|您可以使用类的数组，然后将该数组中的随机类分配给与选择器匹配的每个元素，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2678836|$(document).ready(function(){
++++var+classes+=+["one",+"two",+"three"];

++++$("#container+li").each(function(){
++++++++$(this).addClass(classes[~~(Math.random()*classes.length)]);
++++});
});|code-block|syntax|javascript|2678837|如果要确保每个类只使用一次，可以在使用时将其从数组中删除：|2678838|$(document).ready(function(){
++++var+classes+=+["one",+"two",+"three"];

++++$("#container+li").each(function(){
++++++++$(this).addClass(+classes.splice(+~~(Math.random()*classes.length),+1+)[0]+);
++++});
});|2678839|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

You can use an array of classes and then assign a random class from that array to each element matching a selector like this:

<pre><code>$(document).ready(function(){
 var classes = ["one", "two", "three"];

 $("#container li").each(function(){
 $(this).addClass(classes[~~(Math.random()*classes.length)]);
 });
});
</code></pre>

If you want to ensure that each class is only used once, you can remove it from the array when it is used:

<pre><code>$(document).ready(function(){
 var classes = ["one", "two", "three"];

 $("#container li").each(function(){
 $(this).addClass( classes.splice( ~~(Math.random()*classes.length), 1 )[0] );
 });
});
</code></pre>

blocks|key|176140|text|像这样的东西可能会起作用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|176141|$(+function+(){
++++$(+"#container+li"+).each(+function+(){
++++++++var+rng+=+Math.round(Math.random()*4);
++++++++var+rndmClass+=+[+'one',+'two',+'three',+'four',+'five'+];

++++++++$(this).addClass(+rndmClass[rng]);
++++});
});|code-block|syntax|javascript|176142|相应的HTML+DOM可能如下所示：|176143|ul#container
++++li
++++li
++++li|176144|实际上，我采用了onload语句，并将.each函数塞在其中。其次，我在each()语句中添加了一个function(){}。此函数从0-4中随机选取一个数字；每个数字对应于rndmClass数组中的一个类，并将该类添加到#容器中的每个列表项中。|176145|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Something like this may work:

<pre><code>$( function (){
 $( "#container li" ).each( function (){
 var rng = Math.round(Math.random()*4);
 var rndmClass = [ 'one', 'two', 'three', 'four', 'five' ];

 $(this).addClass( rndmClass[rng]);
 });
});
</code></pre>

The corresponding HTML DOM might look like:

<pre><code>ul#container
 li
 li
 li
</code></pre>

Effectively, I took the onload statement and tucked the .each function inside of it. Secondly, I added a function(){} inside of the each() statement. This function picks a number at random from 0-4; each number corresponds to a class in the rndmClass array, and adds that class to each list item found in your #container.

blocks|key|175454|text|我已经写了一个小的jquery插件，可能对你有用。查看：https://github.com/cjthedizzy/randomClassJS|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|175455|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/cjthedizzy/randomClassJS^0|S|17|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

I've written a little jquery plugin that might work for you. Check it out:
<a href="https://github.com/cjthedizzy/randomClassJS" rel="nofollow">https://github.com/cjthedizzy/randomClassJS</a>

I am trying to add a random class to even &lt; li > element within my #container div

Here is my code: 

<pre><code>$( "#container li" ).each( 

 $().ready(function() {

 $("#container li:random").addClass("one");
 $("#container li:random").addClass("two");
 $("#container li:random").addClass("three");

 })
 );
</code></pre>

The problem is that I have ten &lt; li > elements and I want each of these elements to receive one of the three possible classes in a random fashion.

However my code above only assignes three &lt; li > elements with the classes leaving the remaining seven &lt; li > elements class-less.

I have tried other snippets of code but none of which randomly apply a list of classes to ALL elements specified. 

I have tried snippets from this post <a href="https://stackoverflow.com/questions/1911855/adding-randomly-chosen-class-to-html-tag-using-jquery">HERE</a> but none of which produce the desired result of making sure all elements get a random class.

Thank you for your help.

Apply a random class to every element specified

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试向我的#container div中的甚至< li >元素添加一个随机类下面是我的代码：$( "#container li" ).each( $().ready(function() { $("#container li:random").addClass("one"); $...

问对指定的每个元素应用随机类
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