React Js Series for Beginners தமிழில் 5 : Keywords and Identifiers in Javascript

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In JavaScript, keywords are special words with specific purposes in the language. They are reserved and cannot be used as names for variables or functions. For example, var, let, and const are keywords for declaring variables, while if, else, for, and while are used for controlling code flow.

Identifiers are names you create for variables, functions, and other elements in your code. They help you manage and use these elements. When naming an identifier, it must start with a letter, an underscore (_), or a dollar sign ($). It can then include letters, numbers, underscores, or dollar signs, but cannot start with a number.

Developers must use some naming conventions like camelCase (e.g., myVariable), PascalCase (e.g., MyClass), and snake_case (e.g., my_variable) to keep code organised and readable.

Internal scripts are written directly in HTML files using script tags, while external scripts are in separate .js files linked to HTML.

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🕘Timestamps:
00:00 - What is Keywords
00:10 - Purpose of Keywords
01:20 - What is Identifier
02:05 - Internal vs External Script
04:30 - Identifier Rules
08:05 - Naming Conventions for developers


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