React select div height when DOM is loaded - css

Question

I am having issues with react Plotly displaying correctly when a graph loaded in a hidden tab is selected. It seems this is a known issue where every tab but the default tab will not resize appropriately because it doesn't know the hidden graph's dimensions.
To get around this I would like to dynamically update the tab height to be equal to the height of the default tab. Something like this: Change div height when tab is selected.
The issue is, I am unable to select the tab height value on DOM load. I thought I could add a componentDidMount function with an evenlistener for window load like such:
constructor(props) {
super(props)
this.state = {
value: 0
};
this.handleLoad = this.handleLoad.bind(this);
}
componentDidMount() {
window.addEventListener('load', this.handleLoad);
}
handleLoad() {
console.log("firstTab height: " + $('#firstTab').offsetHeight)
}
This issue is, the console log is outputting firstTab height: undefined.
When i inspect the web page and put the command $('#firstTab').offsetHeight into the console I am able to come up with a height of 697 px.
I don't want to hardcode the tab pixel size. Can anyone guide me as to why I am failing to grab the element height on window load?

Answer 1

Try using clientHeight property.
componentDidMount() {
const height = document.getElementById('firstTab').clientHeight;
}

Answer 2

I think instead of using event listener, you can do something like this.
componentDidMount() {
const height = this.firstTab.clientHeight;
console.log(height) // => gives you height
}
render() {
return (
<div
id="firstTab"
ref={ (firsTabElement) => { this.divElement = firstTabElement } }
>
Tab Content
</div>
)
}
After the first render if you are not hiding or putting any condition to remove the firstTab from the DOM. It will be available to you in componentDidMount lifecycle.