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What is JavaScript?
JavaScript is a high-level, interpreted scripting language used to make web pages interactive. It's an essential technology along with HTML and CSS.
What is a variable in JavaScript?
A variable is a container for storing data values. It's a symbolic name for a value.
How do you declare a variable in JavaScript?
Variables can be declared using var
, let
, or const
keywords. For example: let x = 10;
What are the primary data types in JavaScript?
Common data types include: string, number, boolean, null, undefined, symbol, BigInt, and object.