function generator mdn code example

Example 1: function generator js

function* name([param[, param[, ... param]]]) {
   statements
}

Example 2: JavaScript — Generators

function* makeRangeIterator(start = 0, end = 100, step = 1) {
    let iterationCount = 0;
    for (let i = start; i < end; i += step) {
        iterationCount++;
        yield i;
    }
    return iterationCount;
}