/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

0 vote113 views1 answer
React bootstrap profile card
Javascript React
4 votes106 views2 answers
Get request react
Javascript React
0 vote118 views1 answer
How to go specific content in react single page by id
Javascript React
0 vote103 views1 answer
React handling event
Javascript React
2 votes132 views3 answers
React reset file input
Javascript React
0 vote99 views1 answer
How to display a calender in react native
Javascript React
5 votes100 views1 answer
Import react dom
Javascript React
63 votes110 views3 answers
Concat two arrays in react
Javascript React
0 vote109 views1 answer
Using RN BootSplash with React Navigation
Javascript React
1 vote145 views2 answers
Hosting react with pm2
Javascript React