How to get attribute value from XML with Java Script?

Question

I'm using an application which has XML and Java Script plugin inside. I need to get value of specified attribute. I'm triying to get TEST element's id value with the following command but wrong value is coming.

System.log(document.getDocumentElement("TEST").getAttributes().getNamedItem('id').value);

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Task id="123456">   
    <TEST href="https://portal/api/product/5fb26d98-3590-4b7a-9af6-264468b33a83" id="5fb26d98-3590-4b7a-9af6-264468b33a83" name="TEST" type="application/xml"/>
    <TEST2 href="https://portal/api/product/1fb26d98-3590-4b7a-9af6-264468b33a80" id="1fb26d98-3590-4b7a-9af6-264468b33a80" name="TEST2" type="application/xml"/>
</Task>

When I try to this command, "123456" value is coming. What is wrong ?

Parth M. Dave · Accepted Answer · 2021-02-11 11:07:04Z

1

I think Below statement can give you a desire output:

var x = document.getElementsByTagName("TEST")[0].getAttribute("id"); 
console.log(x);

answered Feb 11, 2021 at 11:07

Parth M. Dave

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2 Comments

delimiyimneyim Over a year ago

I am getting this error "TypeError: Cannot call method "getAttribute" of null".

delimiyimneyim Over a year ago

it works with this ; document.getElementsByTagName("TEST").item(0).getAttribute("id"); Thank you very much !

Quentin · Accepted Answer · 2021-02-11 10:58:39Z

1

getDocumentElement doesn't accept any arguments (it isn't querySelector or getElementsbyTagName) so the string "TEST" is ignored.

It gets the document element, also known as the root element, which is Task in this case.

answered Feb 11, 2021 at 10:58

Quentin

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