JavaScript 触发click事件 兼容FireFox，IE 和 Chrome

 1 <script language="javascript">  
 2      function test2(name)   
 3      {   
 4          if(document.all)   
 5          {   
 6              document.getElementById(name).click();   
 7          }   
 8          else   
 9          {   
10              var evt = document.createEvent("MouseEvents");   
11              evt.initEvent("click", true, true);   
12              document.getElementById(name).dispatchEvent(evt);   
13          }   
14      }   
15 </script>  

1 <a href="#"  onclick="location.href = 'http://www.baidu.com';">baidu</a>  
2 <input type="button" value="clck" onclick="test2('a3');"/>