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JavaScript JavaScript and the DOM (Retiring) Traversing the DOM Sibling Traversal

Brandon Marrero
Brandon Marrero
5,532 Points
Posted by Brandon Marrero
Brandon Marrero
5,532 Points

How to insert an attribute to an element?

I dont understand how to add an attribute, I used setAttribute() and setAttributeNode() and it still didnt work. Error said "undefined"

Jackson Monk
Jackson Monk
4,527 Points

If you wouldn't mind being a little more specific, I may be able to help you further but here is what I know about setAttribute():

elementYouWantToModify.setAttribute('attributeName', 'attributeValue');

If you are getting undefined, then it may be because something is wrong with your element, not the method. Again I may be able to help you more if you are more specific

1 Answer

Clayton Perszyk
MOD
Clayton Perszyk
Treehouse Moderator 48,723 Points
Clayton Perszyk
Clayton Perszyk
Treehouse Moderator 48,723 Points

Without seeing your code, I can only explain setAttribute.

setAttribute takes two arguments in the following order, attributeName and attributeValue.

e.g. 

element.setAttribute("class", "highlight");