How to update a component every second?
You need to use setInterval() to trigger the change, but you also need to clear the timer when the component unmounts to prevent errors and memory leaks.
1 2 3 4 5 6 7 | componentDidMount() { this.interval = setInterval(() => this.setState({ time: Date.now() }), 1000) } componentWillUnmount() { clearInterval(this.interval) } |
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