Identifiers in JavaScript (Hindi) | Rules for identifiers in JavaScript

JavaScript Identifiers :
JavaScript Identifiers are names given to variables, functions, etc. It is the same as identifiers in other programming languages like C, C++.

The rules for writing identifiers are:

1. Identifier names must start with either a letter, an underscore _, or the dollar sign $.
2. Identifier names cannot start with numbers.
3. JavaScript is case-sensitive. So x and X are different identifiers.
4. Keywords cannot be used as identifier names.

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