What does '&&' operator indicate with { this.props.children && React.cloneElement(this.props.children, { foo:this.foo})

Question

I have react class that is rendered using react router. I understand that React.cloneElement is used to pass elements from parent to child. But why/what does the \'&&

Answer 1

It's Short circuit evaluation

(if this part is true) && (this part will execute)

And it shorthand of:

if(condition){
   (this part will execute)
}