04f1dd52b9
* Delay hydration until after page is visible in development * Tweak dead-code elimination
31 lines
555 B
JavaScript
31 lines
555 B
JavaScript
import React from 'react'
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class App extends React.Component {
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constructor() {
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super()
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this.divRef = React.createRef()
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this.state = {
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refHeight: 0,
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}
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}
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componentDidMount() {
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const refHeight = this.divRef.current.clientHeight
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this.setState({ refHeight })
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}
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render() {
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const { refHeight } = this.state
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return (
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<div ref={this.divRef}>
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<h1>DOM Ref test using 9.2.0</h1>
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<code id="ref-val">{`this component is ${refHeight}px tall`}</code>
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</div>
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)
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}
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}
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export default App
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