Variables and Data Types

Variables in JavaScript

JavaScript has three ways to declare variables: var, let, and const.

Data Types:

  • Number: 42, 3.14
  • String: "Hello"
  • Boolean: true, false
  • Undefined, Null
  • Object, Array
Code Examples 
// Variables\nlet name = "JavaScript";\nconst version = "ES6+";\nvar age = 25;\n\nconsole.log(name);\nconsole.log(version);\nconsole.log(age);
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