javascript - "null" values shown in form fields in IE - Stack Overflow

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I use Html helpers to display model data in form fields, e.g. Html.TextBoxFor, Html.TextAreaFor.

When the model values are null, I would expect the values should be empty in the form fields. They are displayed normally in Safari and Firefox, i.e. empty, but in IE, they are shown as "null" in a text field (see image below).

Any clue how to fix this? Thanks.

I use Html helpers to display model data in form fields, e.g. Html.TextBoxFor, Html.TextAreaFor.

When the model values are null, I would expect the values should be empty in the form fields. They are displayed normally in Safari and Firefox, i.e. empty, but in IE, they are shown as "null" in a text field (see image below).

Any clue how to fix this? Thanks.

• javascript
• internet-explorer
• asp-mvc-2
• forms

Share Improve this question Follow edited Mar 24, 2011 at 1:29 William Niu asked Mar 22, 2011 at 5:02 William NiuWilliam Niu 15.9k88 gold badges5757 silver badges9393 bronze badges 2

• What version of IE are you using? – byte Commented Mar 23, 2011 at 9:46
• I just found out that, it's not ASP.NET MVC's problem; it's JavaScript... :p I am still investigating the cause though. – William Niu Commented Mar 24, 2011 at 0:01

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1 Answer 1

Sorted by: Reset to default 8

Well, it turned out to be JavaScript's problem (with IE, that is). In the following statement, if value == null, IE would display null in the textbox (or textarea).

$('#someTextBox').val(value);

The quick fix is simply display an empty string instead...

$('#someTextBox').val(value == null ? '' : value);

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