Web Reference: Sep 25, 2008 · Is there a way to use constants in JavaScript? If not, what's the common practice for specifying variables that are used as constants? A JavaScript variable is a container for storing data, while a constant is a variable whose value cannot be changed. In this tutorial, you will learn about JavaScript variables and constants with the help of examples. Declaring JavaScript Variables Creating a variable in JavaScript is called declaring a variable. You declare a JavaScript variable with the let keyword or the const keyword.
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