scrollHeight and offsetheight give value of undefined

All we need is an easy explanation of the problem, so here it is.

When I console offset and scrollheight it return undefined and I don’t know why

var element = angular.element(
  document.querySelector("#div-content")
);
console.log(element.scrollHeight);
console.log(element.offsetHeight);
vm.hasVerticalScrollbar =
  element.scrollHeight != element.offsetHeight;

if (vm.hasVerticalScrollbar) {
  console.log("true");
} else {
  console.log("false");
}
<div id="div-content">
</div>

<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.7.5/angular.min.js"></script>

I want to know if the dive has scrollbar or not but the first step (scrollHeight & offsetHeight) doesn’t work.
I don’t want to use jQuery

How to solve :

I know you bored from this bug, So we are here to help you! Take a deep breath and look at the explanation of your problem. We have many solutions to this problem, But we recommend you to use the first method because it is tested & true method that will 100% work for you.

Method 1

You should use var element = document.querySelector("#div-content") directly, rather than use angular.element(...) wrap it.

Method 2

There is no need of this:

document.querySelector

You can use angular.element like this:

var element = angular.element("#div-content");

To get scrollHeight/offsetHeight try:

let scrollHeight = element[0].scrollHeight;
let offsetHeight = element[0].offsetHeight;

Note: Use and implement method 1 because this method fully tested our system.
Thank you 🙂

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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