Can someone explain to me why the output is like this?

Question

x=0;
for(; x<=8; x++) {
x += x - x++;
console.log(x);
}
console.log(x+1);
//output: 0 1 2 3 4 5 6 7 8 10

Answer 1

x=x+x-x++ thats what am gonna explain and the output outside the loop.
x=0 so the equation is 0, in the equation x was increased by one, but it has no effect since the result is still coming back to x, so this goes on till it gets to 8, when x=8, 8 will be printed and then incremented which will be x=9 9<=8 so this will Break out of the loop with the value of x as 9, the last console.log(9+1) which is 10

I hope that helps

Answer 2

*AsterisK* tnx a lot for clarification