Hello, how can I access the attributes of an element by using Javascript? I tried this without success. Thanks.

Question

https://code.sololearn.com/WN9PaE5v67Ie/?ref=app

Answer 1

It should be like this:

https://code.sololearn.com/W5xLY00Jn7g5/?ref=app

Answer 2

Although @Jonathan's way is the preferred method in pure Javascript (IMO) you could also just shorten it to;
getComputedStyle(box).width

Answer 3

Or you can use jquery.
import it first, then

$("#id").attr("atrribute")....

Answer 4

The HTMLElement.style property is used to get as well as set the inline style of an element. It can't read external CSS style. 

More info pls check
https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/style

Answer 5

Thanks you all. I used Jonathan's solution.