[Webkit-unassigned] [Bug 15274] Javascript bug in GetElementsByName or RemoveChild or InsertBefore ?

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Sep 25 14:01:50 PDT 2007


------- Comment #8 from bernu at lptmc.jussieu.fr  2007-09-25 14:01 PDT -------
I think I found the real problem.

the Javascript is reduced to 
function del( ){
        var divs = document.getElementsByName( "my_a" ) ;
        divs[0].parentNode.removeChild( divs[ 0 ] ) ;
        console.log( divs.length ) ;
        console.log( divs[0].id ) ;
        console.log( divs[1].id ) ;
and the HTML to 
        <div href="" id="a-1" name="my_a"  >div 1</div>
        <div href="" id="a-2" name="my_a"  >div 2</div>
        <input type="submit" onclick="del() ; return false;" />
The result in the console is
Null value error on line accessing divs[1].id

What I understand is : 
  getElementsByName gives a list of 2 nodes.
  Removing the first div leaves the nodeList divs with 2 elements.
  Accessing the first element surprinsingly worked here (but might not in a
more complicate case)
  Accessing the second element fails on Safari.

On FireFox, the result is more consistent :
error divs[1] has no property.

Thus, removing an element in a list is the problem that WebKit is not doing as
other browsers.

After removing divs[0], divs.length=1 

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