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Const Keywords In JavaScript

In this article, we will discuss const keywords in JavaScript.

Purpose

The const keyword creates a read-only variable. There are 2 important rules to consider with const variable

You cannot redeclare the const variable.
You cannot reassign the value of the const variable
You must assign the value to the constant at the time of declaration.

Example

Consider the following example

<script>
         const pi = 3.14;

         // This code will give error
         pi = 3.1416;

         const pi2;

         // This code will give error
         pi2 = 3.1416;
</script>

Try It

This code will give error as the code is breaking both the rules mentioned above.

Posted By -	Karan Gupta

Posted On -	Wednesday, July 28, 2021

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