How does this specific nested for loop work in vanilla JavaScript?

Question

I got a quiz question in my Full Stack Web Development online course that states the following:

let sum = 0;
for (let i = 0; i < 5; i++) {
    for (let j = 0; j < 2; j++) {
        sum = sum + i + j;
        continue;
    }
}
console.log(sum);

Now, the correct answer to the question is 25 according to the answer of the quiz, but I have no idea how it gets to 25? The closest I get when writing it out on paper to try and visualize it, is either 15 / 16.

Could someone please write a visualization that would make it clearer for me on how this nested loop gets to 25?

Thanks in advance.

Answer 1

Add a console after second for, you should see the visualization

let sum = 0;
for (let i = 0; i < 5; i++) {
    for (let j = 0; j < 2; j++) {
        console.log(`sum=${sum} i=${i} j=${j}`)
        sum = sum + i + j;
        continue;
    }
}
console.log(sum);

//output
// sum=0 i=0 j=0
// sum=0 i=0 j=1 
// sum=1 i=1 j=0 
// sum=2 i=1 j=1 
// sum=4 i=2 j=0 
// sum=6 i=2 j=1 
// sum=9 i=3 j=0 
// sum=12 i=3 j=1
// sum=16 i=4 j=0
// sum=20 i=4 j=1
// 25