There are three ways to declare arrays  JavaScript:

1) First way of declaration of arrays  JavaScript:

var friendsName=new Array();

friendsName[0]=”John”;

friendsName[1]=”Sachin”;

friendsName[2]=”Naren”;

2)    Second way of declaration of arrays  JavaScript:

var friendsName =new Array(“John”,”Sachin”,”Naren”);

3)   Third way of declaration of arrays  JavaScript:

var friendsName =[“John”,”Sachin”,”Naren”];

Access Arrays in JavaScript is as bellow:

var firstFrndName= friendsName[0];   //we get output as John