# How to calculate the XOR of array elements using JavaScript ?

• Last Updated : 15 Apr, 2020

Given an array and is the task to find the XOR of Array elements using JavaScript. There are two approaches to solve this problem which are discussed below:

Simple method: It uses a simple method to access the array elements by an index number and use the loop to find the XOR of values of an Array using JavaScript.

Hey geek! The constant emerging technologies in the world of web development always keeps the excitement for this subject through the roof. But before you tackle the big projects, we suggest you start by learning the basics. Kickstart your web development journey by learning JS concepts with our JavaScript Course. Now at it's lowest price ever!

Example: This example uses a simple method to find the XOR of Array elements using JavaScript.

 ` ``<``html``> `` ` `<``head``> ``    ``<``title``> ``        ``How to Find the XOR of Values ``        ``of an Array in JavaScript? ``    `` `` `` ` `<``body` `style``=``"text-align:center;"``> ``     ` `    ``<``h1` `style` `= ``"color:green;"` `> ``        ``GeeksForGeeks ``    `` ``     ` `    ``<``h3``> ``        ``How to Find the XOR of Values ``        ``of an Array in JavaScript? ``    `` ``     ` `    ``<``h4``> ``        ``----Given Array----<``br``> ``        ``[1, 2, 3, 4, 5, 6, 7, 8, 9, 10] ``    `` ``     ` `    ``<``button` `onclick``=``"myGeeks()"``>Click ``     ` `    ``<``p` `id``=``"gfg"``> ``     ` `    ``<``script``> ``        ``function XOR(input)``        ``{ ``            ``if (toString.call(input) !== "[object Array]") ``            ``return false; ``         ` `            ``var total = Number(input); ``            ``for(var i=1;i<``input.length``;i++) {                 ``                ``if(isNaN(input[i])){ ``                    ``continue; ``                ``} ``             ` `                ``total ^= Number(input[i]); ``            ``} ``            ``return total; ``        ``} ``        ``function myGeeks(item) { ``                ``document.getElementById("gfg")``.innerHTML``                    ``= ``"----XOR of Array----"` `+ "
" ``                    ``+ XOR([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]); ``            ``}``    `` `` `` ` `                    `

Output:

• Before click on the Button: • After click on the Button: Using reduce() method: The array reduce() method in JavaScript is used to reduce the array to a single value and executes a provided function for each value of the array (from left-to-right) and the return value of the function is stored in an accumulator.

Syntax:

`array.reduce( function( total, currentValue, currentIndex, arr ), initialValue )`

Example: This example uses array reduce() method to find the XOR of values of an Array using JavaScript.

 ` ``<``html``> `` ` `<``head``> ``    ``<``title``> ``        ``How to Find the XOR of Values ``        ``of an Array in JavaScript? ``    `` `` `` ` `<``body` `style``=``"text-align:center;"``> ``     ` `    ``<``h1` `style` `= ``"color:green;"` `> ``        ``GeeksForGeeks ``    `` ``     ` `    ``<``h3``> ``        ``How to Find the XOR of Values ``        ``of an Array in JavaScript? ``    `` ``     ` `    ``<``h4``> ``        ``----Given Array----<``br``> ``        ``[1, 2, 3, 4, 5, 6, 7, 8, 9, 10] ``    `` ``     ` `    ``<``button` `onclick``=``"myGeeks()"``> ``        ``Click Here! ``    `` ``     ` `    ``<``br``><``br``> ``     ` `    ``XOR: <``span` `id``=``"GFG"``> ``     ` `    ``<``script``> ``        ``var arr=[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; ``         ` `        ``function ORofArray(XOR, num) { ``            ``return XOR ^ num; ``        ``} ``        ``function myGeeks(item) { ``            ``document.getElementById("GFG").innerHTML ``                ``= arr.reduce(ORofArray); ``        ``} ``    `` `` `` ` `                    `

Output:

• Before click on the Button: • After click on the Button: My Personal Notes arrow_drop_up