function ok(){
var iIndex=0;
for(iIndex=0;iIndex<a.length;iIndex++)
{
if(a[iIndex].value==canshu){
window.write(a[iIndex].value);
}
}
}
var iIndex=0;
for(iIndex=0;iIndex<a.length;iIndex++)
{
if(a[iIndex].value==canshu){
window.write(a[iIndex].value);
}
}
}
var a=[6,9,2,5,8,3,12,21];
var aMap = new Object();
for (var i=0,aMap = new Object(),n=a.length;i<n;i++) aMap[a[i]]=i;alert(aMap["5"])
alert(aMap[12])
var a=[6,9,2,5,8,3,12,21];
for (var i=0,aMap = new Object(),n=a.length;i<n;i++) aMap[a[i]]=i;alert(aMap["5"])
alert(aMap[12])
<!--
var canshu="5";
var a = new Array('6','9','2','5','8');
for(var i=0;i<a.length;i++)
{
if(a[i] == canshu) alert(i);
}
//-->
</script>