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JavaScript

Sathvik Reddy
Sathvik Reddy
6,223 Points

Challenge #4

Why does the below code not work? When I reference the console it shows that the 'ul' has been assigned a class name of 'list', but doesn't apply the CSS styling.

const ul = document.getElementsByTagName('ul');
ul.className = "list";

I am struggling a bit with understanding the different methods in accessing DOM elements.

Thanks!

1 Answer

Steven Parker
Steven Parker
229,608 Points

The "getElementsByTagName" function returns a collection, not a single element. And collections don't have a "className" property.

You could apply an index to "ul" to access a specific item in the collection.

Sathvik Reddy
Sathvik Reddy
6,223 Points

Then how was it able to assign the <ul> a class but not the CSS?

Steven Parker
Steven Parker
229,608 Points

JavaScript allows you to create new properties by simply assigning them. But giving a collection a "className" property won't do anything because the browser has no logic to make use of it. But using my index suggestion, you could assign the property on the list itself instead:

ul[0].className = "list";