How delete zero-width space in String javascript and my comparacion return true

Question

I have a javascript string containing 3 zero-width space.

https://jsfiddle.net/cmedina/pe1jup8a/

4 returns when var.length use.

My question is how can I delete the zero-width space to be able to compare

"." === "."

and return true.

in JavaScript remove ZERO WIDTH SPACE (unicode 8203) from string

I found a solution, but is not valid for this, I try

 var a =".";
 var b = a.replace(/\u200B/g,'');
 var c = a.replace(/\u200B/g,'');
 console.log(a.length);
 console.log(b);
 console.log(c.length);

but always returns 4 characters.

https://jsfiddle.net/cmedina/kxk2raaL/