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Introduction to JavaScript: First Steps

Creating & Naming Variables

Explore how to create variables in JavaScript with the let keyword and learn the essential rules for naming variables. Understand variable naming conventions, case sensitivity, and best practices to avoid errors in your code.

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Creating a Variable

We create a variable with the let keyword. We write let and then the variable name we want afterward. We give it the value we want using =, just like a line from algebra.

Node.js
let number = 10;

The variable number now has the value 10.

Note that we add a semicolon at the end. ...