How to add a CSS class to an element on click - React

Question

How do you add a CSS class to an existing REACT element on click?

I have a JSFiddle created: https://jsfiddle.net/5r25psub/

In the fiddle, the code only wor

Answer 1

You can use the module classnames found here:

https://www.npmjs.com/package/classnames

So you would do something like:

getClassNames() {
    return classNames({
        'blue':  this.state.clicked,
        'green':  !this.state.clicked
    });
},
render () {
    return 
}