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mandymichael/LazyLoading-CodeSample-1.js

Last active September 3, 2019 02:54
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LazyLoading-CodeSample-1.js
componentDidMount() {
this.detectInViewport()
addListener('scroll', this.detectInViewport)
addListener('resize', this.detectInViewport)
}
detectInViewport = () => {
const { top, bottom, height } = this.innerRef.getBoundingClientRect()
// Calculate if on screen and distance from the viewport...
this.setState({ inViewport: viewportPosition, viewportHeight, distanceFromViewport })
}
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