In this tutorial, we will learn about Array in JavaScript. If you ever learn any other programming language then you would have a clear idea about Array. For those who are listening to this word for the very first time. The array is a collection of similar type of data elements. We use a single literal to fetch or add data in Array. There are three ways to define an array in JavaScript.
Page Contents
- Using Array literal
- Using a new keyword
- Using Array constructor
We will understand each method to create Array with help of example.
Using Array literal:
In this method we directly define literal we define all elements of an array in square brackets. Mean we define and initialize the array together. As shown in Example.
<script>
var students=["Raj","Sanjeev","Kishore"];
for (num=0;num<students.length;num++){
document.write(students[num] + " ");
}
</script>
Using square brackets:
In this method we directly define literal we define all elements of an array in square brackets. Mean we define and initialize the array together. As shown in Example.
<script>
var students=["Raj","Sanjeev","Kishore"];
for (num=0;num<students.length;num++){
document.write(students[num] + " ");
}
</script>
Using new keyword:
in this method, we create array using the new keyword. Then we assign a value on different indexes of array. Following example will help you to understand it clearly.
<script>
var num;
var students = new Array();
students[0] = "Raj";
students[1] = "Sanjeev";
students[2] = "Kishore";
for (num=0;num<students.length;num++){
document.write(students[num] + " ");
}
</script>
Using Array constructor:
In this method, we pass values in Array Constructor while instantiating Array. Check the following example.
<script>
var students=new Array("Raj","Sanjeev","Kishore");
for (num=0;num<students.length;num++){
document.write(students[num] + " ");
}
</script>
Parvesh Sandila is a results-driven tech professional with 8+ years of experience in web and mobile development, leadership, and emerging technologies.
After completing his Master’s in Computer Applications (MCA), he began his journey as a programming mentor, guiding 100+ students and helping them build strong foundations in coding. In 2019, he founded Owlbuddy.com, a platform dedicated to providing free, high-quality programming tutorials for aspiring developers.
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