Any suggestions as to how I can make this work?
Thanks.
function checkIt(fldID,maxValue,btnID){
if (document.getElementById(fldID).value > maxValue)
{alert('Invalid Lane Number');
document.getElementById(btnID).disabled=true;
document.getElementById(fldID).focus;}
else
document.getElementById(btnID).disabled=false;
}
After clearing up the syntax error as noted by Michael & Randy, this
function still did not work - or so I thought. Some further messing
around with it revealed that apparently the focus IS being set to the
input field (fldID) but then (I'm guessing) the TabKey keystroke
executes and moves the cursor to the next field!
I found that, if I mouse away from the field then the cursor will go
back to the field and stay there. But keying away (with either the tab
or Enter keys) results in the focus ending up somewhere else. (in
fact, hitting <Enter> clicks an enabled button on the form AFTER
closing the alert box!)
I also found that, if I call this function from the onblur event
(instead of onchange), it works perfectly. No matter which key is used
the focus goes to the specified field and stays there. Apparently,
onchange and onblur occur at different points relative to the
keystroke itself.
Since I don't want to use onblur, my question now becomes: how can I
(in the function script) cancel the keystroke that occurred. (I'm
coming from a Visual basic perspective here - in VB cancelling a
keystroke is trivial). Is this possible in Javascript?
Thanks.