document.form[0] is Null or Not an Object error when hiding a text field in ASP.Net

Posted by grady on Stack Overflow See other posts from Stack Overflow or by grady
Published on 2010-04-15T08:03:52Z Indexed on 2010/04/15 8:13 UTC
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aspx

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JavaScript

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c#

Hey,

I am hiding a TextBoxin my aspx page like this:

myField.visible=false;

Now I have a DropDown as well which tries to access the TextBox on IndexChange. The problem is, it cant access the hiffen TextBox and I am getting document.form[0] is Null or Not an Object. How can I solve that? Is the some check for that in JavaScript?

Thanks :-)

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