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Understand JavaScript objects with Online Learner. Learn how to create objects, access properties, and use object methods.

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Learn how the JavaScript Event Loop works with Online Learner. Understand why it is crucial for asynchronous programming and master callbacks, promises, and microtasks for interviews.

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Discover the meaning of PHP and its evolution from Personal Home Page to PHP: Hypertext Preprocessor.

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Learn what Node.js is with Online Learner. Understand how Node.js works as a server-side JavaScript runtime with clear examples.

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Learn what React is with Online Learner. Understand the React JavaScript library, its purpose, and why developers use it.

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Learn HTML entities with Online Learner. Display special characters like &, , and © safely in your webpages.

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Learn what a foreign key is in SQL with Online Learner. Understand how foreign keys link tables, ensure data consistency, and reference primary keys in related tables.

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Learn how PHP date() formats timestamps and dates with Online Learner. Covers format characters, examples, and common use cases.