Where is wrong of my alert statement?

Edward King · May 28th, 2005, 05:05 AM

I have a question about my javascript,I want to show the value of hidden by using alert(document.abcd.value),but when I run the html,I find it don't show the the hidden value,why? How to modify it?
My code is follows:

<html>
<head>
<script language="JavaScript">
alert(document.abcd.value);
</script>
</head>
<body>
<input type="hidden" name="abcd" value="11">
</body>
</html>

Imar · May 28th, 2005, 05:12 AM

When the page loads, it first hits the alert statement in the head section. At that point, the rest of the page hasn't loaded, so document.abcd doesn't exist yet.

Move your alert to the onload of the page that fires *after* the page has completed loading. You also need to wrap your control in a <form> tag and then reference it by its name:

<body onload="alert(document.frmTest.abcd.value);">
<form name="frmTest">
<input type="hidden" name="abcd" value="11">
</form>
</body>

HtH,

Imar
---------------------------------------
Imar Spaanjaars
Everyone is unique, except for me.
While typing this post, I was listening to: Reverence by Faithless (Track 1 from the album: Reverence) What's This?