$(document).ready(function () { 
var count = 10; 
countdown = setInterval(function () { 
$("p.countdown").html(count + " 秒后将跳转！"); 
if (count == 0) { 
clearInterval(countdown) 
window.location = 'http://google.com'; 
} 
count--; 
}, 1000); 
}); 
//javascript/4230