JavaScript Array forEach () Method

JavaScript Tutorial � JavaScript forEach()

The arr.forEach() method calls the provided function once for each element of the array.

Syntax:

Example:

array.forEach(function(currentValue, index, arr), thisValue)

Parameters:�This method accepts five parameters:

currentValue: Required. The value of the current element
index: Optional. The array index of the current element
arr: Optional. The array object the current element belongs to
thisValue: Optional. A value to be passed to the function to be used as its "this" value.

JS foreach () array - example

In this example the method forEach() calculates multiplication of every element of the array.

Example:

<!DOCTYPE html>

  <html>

  <body>
<p>Get multiplication of the numbers in the array.</p>
<p id="my_demo"></p>
<script>

  var my_multiplication = 2;

  var my_numbers = [3, 4, 6, 10];

  my_numbers.forEach(my_Function);
function my_Function(item) {

  my_multiplication *= item;

  document.getElementById("my_demo").innerHTML = my_multiplication;

  }

  </script>
</body>

  </html>

Output:
Get multiplication of the numbers in the array.
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javascript foreach object, array, continue, break, return, example, key value, json, async, array of objects, element in array, loop, await
JavaScript Array forEach () Method - javascript tutorial

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