数字不跳转，怎么回事啊
var timer=document.getElementById("second").innerHTML; function count(){ document.getElementById("second")=timer; timer--; if(timer==0){ window.location.assign("http://baidu.com");} } setInterval("count()",1000); function goback(){ window.history.back(); }数字不跳转，怎么回事呀
