Can some explain to me why when i run this code its goes like a triangle shape

Question

var c = "";
var n = 1;
while (n <= 10) {
c += "* ";
n++;
console.log(c);
}

Answer 1

c+="* " is equal to c=c+"* ".

Now first time we have c="" +"* "="* "
n=1;

Second time , c="* "+"* "="* * "
n=2

And so on.