Get The Current Array Index in JavaScript forEach()
Oct 9, 2020
JavaScript's forEach() function takes a callback as a parameter, and calls
that callback for each element of the array:
// Prints "a, b, c"
['a', 'b', 'c'].forEach(function callback(v) {
console.log(v);
});The first parameter to the callback is the array value. The 2nd parameter is the array index. That's the current
position in the array the forEach() loop is at.
// Prints "0: a, 1: b, 2: c"
['a', 'b', 'c'].forEach(function callback(value, index) {
console.log(`${index}: ${value}`);
});
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