js: y++>=1

Question

var x=1, y=1, z=0;
do {
z=x+y;
}
while(++x<=1&&y++>=1);
console.log(x,y,z);
//2,1,2

This was a SL challenge (not my code). I’d like to understand why y remains 1 in the while-row?

Answer 1

In logical && operation, if first case is false then it dont execute next second condition because 0&&0 =0 or 0&&1=0 only..
So y++ won't executes, ++x<=1 false