 Dormilich  8,658
Recognized Expert Moderator Expert
I’m trying to do the following - document.getElementsByTagName("sup").getElementsByTagName("a");
currently I have this because I somehow need to return a combined result NodeList - // can’t prototype into NodeList because of Firefox
-
if (!Object.getElementsByTagName && Object.length)
-
{
-
Object.prototype.getElementsByTagName = function(name)
-
{
-
// the only idea I got
-
var div = document.createElement("div");
-
for (var i=0, len=this.length >>> 0; i<len; i++)
-
{
-
if (i in this)
-
{
-
div.appendChild(this[i]); // line 92
-
}
-
}
-
return div.getElementsByTagName(name);
-
}
-
}
but when running the code (FF 3.5.2) I get the following Exception:
uncaught exception: [Exception... "Component returned failure code: 0x80004003 (NS_ERROR_INVAL ID_POINTER)" nsresult: "0x80004003 (NS_ERROR_INVAL ID_POINTER)" location: "JS frame :: http://localhost/phileasson.xhtml#n1-1 :: anonymous :: line 92" data: no]
there are some <sup> before that, which do work. by checking the created div I found that the mentioned node has been already copied …
can anyone help me in that matter?
HTML sample code - <h4>15<sup>th</sup> – 24<sup>th</sup> Hesinde<sup><a href="#n1-3">3</a></sup></h4>
15 5764  Dormilich 8,658
Recognized Expert Moderator Expert
I can prevent the Exception by - div.appendChild(this[i].cloneNode(true));
but that’s not returning the NodeList I need later …
Hi Dormilich,
Do u want to get the anchor object inside the <sup>? I tried out this one... -
function callJS(){
-
var subObj = document.getElementsByTagName('sup');
-
for(i=0;i<subObj.length;i++)
-
{
-
try
-
{
-
var aObj = subObj[i].getElementsByTagName('a');
-
if(aObj.length>0)
-
{
-
alert("I got the Object at the Index "+i);
-
}
-
}
-
catch(e)
-
{}
-
}
-
}
Thanks and Regards
Ramanan Kalirajan
Dormilich 8,658
Recognized Expert Moderator Expert @RamananKaliraja n
yes, I want to get those anchors (which is not a problem as is), but I need them returned as one list (which is the problem here). an alert is of no use here :(
maybe it also works when returning an Array (though that’s not the same) …
Frinavale 9,735
Recognized Expert Moderator Expert
Sorry, but what's the difference between "one list" and an array?
Dormilich 8,658
Recognized Expert Moderator Expert
RamananKaliraja n’s code doesn’t have a return value (aka one list)
getElementsByTa gName() usually returns a NodeList. if I prototype getElementsByTa gName into the NodeList interface I’d like it to return a NodeList too (because that’s what you’d expect). if everything fails it could also return an array…
Frinavale 9,735
Recognized Expert Moderator Expert
I think the NodeList is immutable (see this article...)...
Dormilich 8,658
Recognized Expert Moderator Expert
that’s also the impression I got…
Frinavale 9,735
Recognized Expert Moderator Expert
I tried it...but it just wont work.
I don't think you can join NodeLists together.
Best I could do was create an array of nodes -
<html>
-
<head>
-
</head>
-
<body>
-
<input type="text" id="text1" name="text1" />
-
<input type="text" id="text2" name="text2" />
-
<input type="text" id="text3" name="text3" />
-
-
<select id="select1" name="select1">
-
<option>1</option>
-
<option>2</option>
-
</select>
-
<select id="select2" name="select2">
-
<option>1</option>
-
<option>2</option>
-
</select>
-
-
<script type="text/javascript">
-
-
var inputs = document.getElementsByTagName('input');
-
var selects = document.getElementsByTagName('select');
-
-
-
var all = new Array(inputs.length + selects.length);
-
var index = 0;
-
for (i = 0; i < inputs.length; i++)
-
all[index++] = inputs[i];
-
for (i = 0; i < selects.length; i++)
-
all[index++] = selects[i];
-
-
-
</script>
-
-
</body>
-
</html>
Sorry...maybe someone else knows more :)
I'm pretty new to JavaScript.
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