下面这段javascript代码这样写对吗,该怎么处理

下面这段javascript代码这样写对吗
<script>
if not (window.confirm( "continue? "))
{
  alert( "operation 1 ");
}
else
{
  alert( "operation 2 ");
}
</script>  
如果不对那该把 not放在哪

[解决办法]
if ( ! confirm( "continue? "))


另外干嘛要not？
opration1 operation2 换个位置不行？
[解决办法]
<script>
if (!!!window.confirm( "continue? "))
{
alert( "operation 1 ");
}
else
{
alert( "operation 2 ");
}
</script>
 

[解决办法]
<script>
if(!window.confirm( "continue? "))
{
alert( "operation 1 ");
}
else
{
alert( "operation 2 ");
}
</script> 
没有not，C#里!号就是非的意思，所以可以这样写。
[解决办法]

JScript code

<script>alert(window.confirm("continue?")?"operation 1 ":"operation 2 ";</script>
[解决办法]
<script type=...>

if not (window.confirm( "continue? "))

firebug 调调