React js onClick can't pass value to method

Question

I want to read the onClick event value properties. But when I click on it, I see something like this on the console:

SyntheticMouseEvent {dispatchConfig: Ob         


        

Answer 1

Theres' a very easy way.

 onClick={this.toggleStart('xyz')} . 
  toggleStart= (data) => (e) =>{
     console.log('value is'+data);  
 }