React, how access to class property into a callback

Question

I'm new in React development.. this is the code I've wrote

constructor(props) {
    super(props);

    this.state = { videos: [] };
    YTSearch({ key: API_KEY, term: 'Led zeppelin'}, function(videos) {
        this.setState({ videos });
    });
}

but when running i've this error into the console

proxyConsole.js:56 TypeError: Cannot read property 'setState' of undefined
    at index.js:17
    at index.js:19
    at <anonymous>

the "this" variable is null.. why? How can i access to this.setState ??

Possible duplicate of [How to access the correct \`this\` inside a callback?](https://stackoverflow.com/questions/20279484/how-to-access-the-correct-this-inside-a-callback) — Yury Tarabanko, Aug 10 '17 at 10:05
binding issue use arrow function `(videos) => {`, check this ques also: [Cannot read property 'setState' of undefined](https://stackoverflow.com/questions/32317154/uncaught-typeerror-cannot-read-property-setstate-of-undefined) — Mayank Shukla, Aug 10 '17 at 10:06

score 1 · Accepted Answer · answered Aug 10 '17 at 10:06

1

 YTSearch({ key: API_KEY, term: 'Led zeppelin'}, (videos) => {
        this.setState({ videos });
    });

Try this

answered Aug 10 '17 at 10:06

Nocebo

1,927
3
15
26

React, how access to class property into a callback

1 Answers1