What is array filter in JavaScript

In this article I will go to explain use of array filter method in JavaScript
  • 2343

Array filter method in JavaScript

JavaScript array filter method creates a new array with all element that pass the test implemented by the given function.

Syntax of filter method

array.filter(callback[, thisArgs);


Parameters in filter method:

  • arrary

    Array required an array object.

  • callback

    Callback function accepts up to three arguments, and callback function is used to test  for each element

  • thisArgs

    ThisArgs is used as this when executing callbacks.

Return value in filter method

Filter method returned a newly created array.

Exception in filter method

If callback argument is not a function object, A TypeError exception is fire.

There are the following callback function parameter:

Parameter Value
value Array element value.
index Numeric  index of the array element.

Example of filter  method



<title>Filter method in java scrip</title>



<script type="text/javascript">

    var arr = [5, "Filter", 10, "Method", true];

    var result = arr.filter(

    function (value) {

        return (typeof value === 'string');









Filter, Method

Ask Your Question 
Got a programming related question? You may want to post your question here


More Articles

© 2020 DotNetHeaven. All rights reserved.