/Javascript/React/Why is this undefined in react

Why is this undefined in react

There are a couple of ways to deal with it. see first stackoverflow answer you
will get it.

One is to add this.onToggleLoop = this.onToggleLoop.bind(this); in the constructor.

Another is arrow functions onToggleLoop = (event) => {...}.

And then there is onClick={this.onToggleLoop.bind(this)}.

Similar codes

4 votes204 views2 answers
React input number
Javascript React
0 vote188 views1 answer
How get value of datePicker in react
Javascript React
0 vote180 views3 answers
React-hook-form input
Javascript React
0 vote327 views5 answers
Prototype react
Javascript React
1 vote196 views1 answer
Rendering, reconciliation and committing in react
Javascript React
0 vote183 views1 answer
React import json
Javascript React
1 vote193 views1 answer
React-native razorpay
Javascript React
0 vote220 views1 answer
Get height webview from url video react native
Javascript React
0 vote218 views1 answer
Unable to resolve "@react-native-community/masked-view" from
Javascript React
0 vote193 views2 answers
React native how to delete android build
Javascript React