/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 vote373 views1 answer
React native import virtual path
Javascript React
0 vote485 views1 answer
How to set the id attr to a var in reactjs
Javascript React
0 vote453 views1 answer
Button click open external link react
Javascript React
2 votes401 views2 answers
Capture enter button react input
Javascript React
0 vote404 views1 answer
Auto refresh database in outsystems reactive
Javascript React
8 votes328 views2 answers
Useref in react typescrpt
Javascript React
7 votes382 views2 answers
React native password input
Javascript React
6 votes380 views1 answer
React history with search
Javascript React
1 vote374 views1 answer
React native scrollview sticky header
Javascript React
113 votes444 views6 answers
How to create a new react app
Javascript React