HTML:
<div id="tab">This is a paragraph.</div> <div id="tab">This is a paragraph.</div> <div id="tab">This is a paragraph.</div> <div id="tab">This is a paragraph.</div>
CSS:
#tab{ height:30px; width:130px; background-color:red; }
Jquery:
$(document).ready(function() { function randomNumber() { return Math.floor(Math.random() * 255) } $('#tab').mouSEOver(function() { $('#tab').css('background-color','rgb(' + randomNumber() + ',' + randomNumber() + ',' + randomNumber() + ')'); }); $('#tab').mouSEOut(function() { $('#tab').css('background-color','white'); }); });
解决方法
您只能分配一次ID!将其更改为类似
http://jsfiddle.net/nHCXV/3/的类