How to use useEffect in React hook

Issue #669

Specify params as array [year, id], not object {year, id}

const { year, id } = props
useEffect(() => {
        const loadData = async () => {
            try {
                
            } catch (error) {
                console.log(error)
            }
        }

        listenChats()
    }, [year, id])
}

Hooks effect

• https://reactjs.org/docs/hooks-effect.html
• https://reactjs.org/docs/hooks-reference.html#useeffect

By default, it runs both after the first render and after every update.

This requirement is common enough that it is built into the useEffect Hook API. You can tell React to skip applying an effect if certain values haven’t changed between re-renders. To do so, pass an array as an optional second argument to useEffect:

useEffect(() => {
  document.title = `You clicked ${count} times`;
}, [count]); // Only re-run the effect if count changes

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Updated at 2020-06-17 06:21:08