JavaScript Array findLast()

Definition and usage

findLast() The method returns the value of the last element that passed the test.

findLast() The method executes a function for each array element.

If no elements are found,findLast() The method returns undefined.

findLast() The method does not execute the function for empty array elements.

findLast() The method does not change the original array.

Array search methods:

Instance

Example 1

Find the last element with a value greater than 18:

const ages = [3, 10, 18, 20];
function checkAge(age) {
  return age > 18;
}
function myFunction() {
  document.getElementById("demo").innerHTML = ages.findLast(checkAge);
}

Try it yourself

Example 2

Find the last element with a value greater than the specified number:

<p><input type="number" id="ageToCheck" value="18"></p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
const ages = [4, 12, 16, 20];
function checkAge(age) {
  return age > document.getElementById("ageToCheck").value;
}
function myFunction() {
  document.getElementById("demo").innerHTML = ages.findLast(checkAge);
}
</script>

Try it yourself

Syntax

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

Parameters

Return Value

Browser Support

findLast() It is a feature of ES2023.

Since July 2023, all modern browsers support this method: