Get exact width element

Question

I have an element with 80.5px width

in javascript i have a script that checks whats the elements width is

document.getElementById("..").clientWidth

but that returns 80 and not 80.5 is there a way to fix that?

user_17087765 · Answer

You can achieve by using Element.getBoundingClientRect().width

let box = document.getElementById('box');
let width = box.getBoundingClientRect().width;
console.log(width);

#box { width:80.5px; }