Javascript

js倒计时跳转

作者 
<script language="javascript">
<!--   
var maxtime = 2;//按秒计算，自己调整! by hkshadow QQ 2765237   
var hiddenid = document.getElementById('hiddenid').value;
function CountDown(){   
 if(maxtime>=0){   
 seconds = maxtime--; 
 msg = seconds+"秒后跳转...";   
document.getElementById('timer').innerHTML=msg;
}   
 else{   
	clearInterval(timer);   
	//P.cancel();   
 top.location = "/wedding/main/bidinginfo.php?id="+hiddenid;
 }   
}   
timer = setInterval("CountDown()",1000);   
//-->   
</script>

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js判断checkbox选中

作者 
<script type="text/javascript"> 
function check_box() { 
var count=document.myform.checkThis.length; 
//var count=document.getElementById('checkThis').length;
alert(count);
var j=0; 
for(var i=0;i<count;i++) 
{ 
if (document.myform.checkThis[i].checked) 
//if (document.myform.checkThis[i].checked) 
//document.getElementById('checkThis').checked;
++j; 
} 
if(j==0) {
alert("至少选择一个！！"); 
return false;
} 
else 
{ 
return true;
} 
}
</script>

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