Want to setstate on componentDidMount() in React? It is not an anti-pattern to call setState in componentDidMount. In fact, ReactJS provides an example of this in their documentation:
You should populate data with AJAX calls in the componentDidMount lifecycle method. This is so you can use setState to update your component when the data is retrieved.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | componentDidMount() { fetch("https://api.example.com/items") .then(res => res.json()) .then( (result) => { this.setState({ isLoaded: true, items: result.items }); }, // Note: it's important to handle errors here // instead of a catch() block so that we don't swallow // exceptions from actual bugs in components. (error) => { this.setState({ isLoaded: true, error }); } ) } |
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