Alexandre Kirszenberg is correct, But another important thing to pay attention to , is where you put your binding. I have been stuck with a situation for days(probably because I'm a beginner), but unlike others, I knew about bind(Which I had applied already) so I just couldn't get my head around why I was still having those errors. It turns out that I had the bind in wrong order.
Another is also perhaps the fact that I was calling the function within "this.state", which was not aware of the bind because it happened to be above the bind line,
Below is what I had(By the way this is my first ever posting, But I thought it was very important, as I couldn't find solution any where else):
constructor(props){
super(props);
productArray=//some array
this.state={
// Create an Array which will hold components to be displayed
proListing:productArray.map(product=>{return()})
}
this.popRow=this.popRow.bind(this);//This was the Issue, This line //should be kept above "this.state"
