Bug 119465 – htmlformcontrolscollection.namedItem(name) should be returned "Null", if there are no nodes in the collection.

• Status: RESOLVED
• Resolution: INVALID
• Component: DOM

[Sanghyun Park]

According to below Algorithm, htmlformcontrolscollection.namedItem(name),htmloptionscollection.namedItem(name), htmlallcollection.namedItem(name) and  htmlformcontrolscollection(name)  should be returned "Null",  if there are no nodes in the collection. [1][2][3][4].
But undefined is returned in WebKit in this case.

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The namedItem(name) method must act according to the following algorithm:

If, at the time the method is called, there is exactly one node in the collection that has either an id attribute or a name attribute equal to name, then return that node and stop the algorithm.
Otherwise, if there are no nodes in the collection that have either an id attribute or a name attribute equal to name, then return null and stop the algorithm.

Otherwise, create a new RadioNodeList object representing a live view of the HTMLFormControlsCollection object, further filtered so that the only nodes in the RadioNodeList object are those that have either an id attribute or a name attribute equal to name. The nodes in the RadioNodeList object must be sorted in tree order.
Return that RadioNodeList object.
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[1] http://www.w3.org/TR/html5/infrastructure.html#dom-htmlformcontrolscollection-nameditem
[2] http://www.w3.org/TR/html5/infrastructure.html#dom-htmloptionscollection-nameditem
[3] http://www.w3.org/TR/html5/infrastructure.html#dom-htmlallcollection-nameditem
[4] http://www.w3.org/TR/html5/infrastructure.html#dom-htmlformcontrolscollection-nameditem