Array.forEach()

The forEach() method calls a function (a callback function) once for each array element.

const numbers = [45, 4, 9, 16, 25];
let txt = "";
numbers.forEach(myFunction);

function myFunction(value, index, array) {
txt += value + "<br>";
}

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Note that the function takes 3 arguments:

The example above uses only the value parameter. The example can be rewritten to:

const numbers = [45, 4, 9, 16, 25];
let txt = "";
numbers.forEach(myFunction);

function myFunction(value) {
txt += value + "<br>";
}

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Array.forEach() is supported in all browsers except Internet Explorer 8 or earlier.

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