js取url参数

 function query_get(){    
var querystr = window.location.href.split("?")   
return querystr[1];   
}   
var gets = query_get();   
var gets_array = gets.split("&");   
for (var i=0; i<gets_array.length;i++)   
{   
var getvar = gets_array[i].split('=');   
var output = "? " + getvar[0] + " 的值是 " + "/"" + getvar[1] + "/"<br>";   
document.write(output);   
}