About Lesson
JavaScript syntax and variables
Here are some basics of JavaScript syntax and variables:
- Statements and Comments
JavaScript statements are instructions that tell the browser what to do. A statement can be a variable declaration, an assignment, or a function call. Statements are separated by semicolons (;).
- Variables
JavaScript variables are used to store data values. You can declare a variable using the var, let, or const keywords.
- Data Types
JavaScript has several data types, including numbers, strings, booleans, objects, and arrays. Variables in JavaScript can hold any of these data types.
- Operators
JavaScript has several types of operators, including arithmetic operators, comparison operators, logical operators, and assignment operators.