Can someone ,please help better explain this code to me in JavaScript

Question

var i,j;
var c=0;
for(i=1; i<=3; i++){
for(j=1,j<=2; j++){
c+=j;
}
}
alert(c)
output //9
how ,can someone help out here ,to better explain this loop

Answer 1

The inner loop adds 3 to c:

c+= 1 // c === 1
c+= 2 // c === 3

The outer loop repeats the inner loop 3 times, hence 3 * 3 = 9.

Answer 2

thank a lot Nguyen Van Hoang

Answer 3

You're welcome. Glad to help.