JavaScript Tutorial for Beginners

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• 1. JavaScript (JS) is a high-level, interpreted, cross-platform, and open-source programming language.
• 2. JavaScript (js) is a lightweight object-based scripting programming language that is mainly used in web programming.
• 3. It supports both client-side and server-side scripting.
• 4. It is responsible for making web pages interactive and responsive. Like HTML defines the content and structure of web page, CSS styles the layout, and JavaScript make that web page interactive.
• 5. JS is not a compiled language, but it is an interpreted language. The JavaScript interpreter embedded inside the web browser software (such as Microsoft Internet Explorer, Google Chrome, Firefox, Opera, etc) translates the JavaScript code in the order they are written.
• 6. All popular web browsers such as Chrome, Firefox, Opera, etc. support JavaScript as they provide built-in execution environments.
• 7. JavaScript follows the syntax and structure of the C programming language. Thus, it is a structured programming language.
• 8. JavaScript is a weakly typed language, where certain types are implicitly cast (depending on the operation).
• 9. It is a case-sensitive language.
• 10. JavaScript is supportable in several operating systems including, Windows, macOS, etc.
• 11. It provides good control to the users over the web browsers.
• 12. JavaScript programs do not depend on any specific hardware platform or operating system. It run inside HTML document.
• 13. Since JS is open-source, therefore, everyone can use JS without purchasing a license.
• 14. Since JS is a client-side scripting language, JS code can be directly embedded into HTML pages.