Getting HtmlElement from document

Question

I want to get Element height from document, I am trying get it with const header = document.getElementsByClassName(myClass). But there some problems in conversion of Element to HTMLElement. Are there some ways for building HTMLElement from string or getting attributes like offsetHeight from HTMLCollection?

const myheader = document.getElementsByClassName(myClass);
console.info(myHeader[0].offsetHeight);

Is `myClass` a JS variable or is it the name of the class? If it's the name of class, it needs to have quotation marks. like ('myClass'). — Mirakurun, Dec 25 '18 at 15:22
using getComputedStyle I have an error 'Element has an 'any' type because type 'Element' has no index signature — Александр Миронов, Dec 25 '18 at 15:28
Maybe it gives you some hints https://stackoverflow.com/questions/9979172/difference-between-node-object-and-element-object — Kas Elvirov, Dec 25 '18 at 15:31

score 0 · Answer 1 · answered Dec 25 '18 at 16:13

0

Yes you can use something like this to get offset height

document.getElementsByClassName('popup')[0].offsetHeight

answered Dec 25 '18 at 16:13

Farveen Hassan

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Getting HtmlElement from document

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