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JavaScript Promises

Track :

Programming

Lessons no : 11

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What will you learn in this course?
  • Master how to create and implement JavaScript Promises for asynchronous programming and data handling
  • Understand Promise states, including pending, fulfilled, and rejected, for effective error management
  • Apply Promise chaining to write clean, readable, and maintainable asynchronous code in JavaScript
  • Utilize Promise methods like then, catch, and finally to handle asynchronous operations and errors
  • Implement real-world scenarios using JavaScript Promises for API calls and data fetching
  • Debug and troubleshoot Promise-based code to improve application reliability and performance
  • Integrate Promises with async/await syntax for simplified asynchronous workflows in JavaScript
  • Optimize asynchronous JavaScript code using Promise best practices for scalable web applications

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Lessons | 11

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The Promise object supports two properties: state and result. While a Promise object is "pending" (working), the result is undefined. When a Promise object is "fulfilled", the result is a value. When a Promise object is "rejected", the result is an error object.