javascript - Uncaught TypeError: Cannot set property 'value' of undefined in Google Chrome - Stack Overflow

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In my page A, there is a textarea defined like this:

<textarea readonly wrap="Physical" cols="50" rows="2" name="Attr">

The page A opens page B in a popup (by window.open('PageB')).

In the page B, the button "Save" executes this line of code:

window.parent.opener.document.all.Attr.value='Value 1, Value 2,';

This one causes an error in Google Chrome (error: "Uncaught TypeError: Cannot set property 'value' of undefined") but works perfectly with Internet Explorer and Mozilla Firefox. I have read that document.all is old and should be replaced by document.getElementById which I did but with no success (error: "Uncaught TypeError: Cannot set property 'value' of null").

If I replace document.all by document.forms[0], it works in all browsers including Google Chrome. But that doesn't seem to be a good solution as the page B could be called by other pages than Page A and that could have more than one form.

Could anyone tell me what I am doing wrong?

Thanks in advance!

Opec.

In my page A, there is a textarea defined like this:

<textarea readonly wrap="Physical" cols="50" rows="2" name="Attr">

The page A opens page B in a popup (by window.open('PageB')).

In the page B, the button "Save" executes this line of code:

window.parent.opener.document.all.Attr.value='Value 1, Value 2,';

This one causes an error in Google Chrome (error: "Uncaught TypeError: Cannot set property 'value' of undefined") but works perfectly with Internet Explorer and Mozilla Firefox. I have read that document.all is old and should be replaced by document.getElementById which I did but with no success (error: "Uncaught TypeError: Cannot set property 'value' of null").

If I replace document.all by document.forms[0], it works in all browsers including Google Chrome. But that doesn't seem to be a good solution as the page B could be called by other pages than Page A and that could have more than one form.

Could anyone tell me what I am doing wrong?

Thanks in advance!

Opec.

• javascript
• html
• google-chrome

Share Improve this question Follow asked Jan 13, 2014 at 15:08 OpecOpec 8511 gold badge33 silver badges1010 bronze badges

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1 Answer 1

Sorted by: Reset to default 1

Why can't you just assign it an id an access it through that?

<textarea id="text" readonly wrap="Physical" cols="50" rows="2" name="Attr">

and in your javascript

document.getElementById("text").value="Value 1, value 2"

Here is a JSFiddle demonstrating it

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