What do return -1, 1, and 0 mean in this Javascript code?

Question

Here is the context:

function compare (value1, value2) {
    if(value1 < value2) {
        return -1;
    } else if (value1 > value2) {
        return 1;
          


        

Answer 1

-1 means that value1 is less than value2

0 means that value1 is equal to value2

1 means that value1 is greater than value2