Why am I getting an undefined error with my xml?

Question

I was trying to follow the answer from here: Create XML in Javascript

I am getting an error in the console "undefined is not a function" for the 2nd line here:

var mat = document.createElement("mat");
imgsource = mat.createAttribute("imgsrc");
imgsource.nodeValue = default_matte_source;

total_size = mat.createAttribute("total_size");
total_size.nodeValue = 7.5;

cpu = mat.createAttribute("cpu");
cpu.nodeValue = 12;

cid = mat.createAttribute("cid");
cid.nodeValue = default_matte_cid;

is there really something called `createAttribute` as opposed to `setAttribute`? — sabithpocker, May 27 '14 at 15:07
@sabithpocker Yes: https://developer.mozilla.org/en-US/docs/Web/API/document.createAttribute — Paul Roub, May 27 '14 at 15:10

score 2 · Accepted Answer · answered May 27 '14 at 15:07

2

createAttribute() is a method of document, not of individual nodes. You'll want something like:

imgsource = document.createAttribute('imgsrc');
imgsource.nodeValue = default_matte_source;
mat.setAttributeNode(imgsource);

answered May 27 '14 at 15:07

Paul Roub

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How is this different from doing `setAttribute('imgsrc',default_matt_source)`? or both produce same results? – sabithpocker May 27 '14 at 15:11
1

Essentially the same result; this one (a) returns the attribute element if you wish to manipulate it further and (b) doesn't lower-case the attribute name when working in an HTML context (`setAttribute()` does). – Paul Roub May 27 '14 at 15:15

Why am I getting an undefined error with my xml?

1 Answers1