JavaScript Promise is a way to handle asynchronous operations in JavaScript, like fetching data from an API or reading a file. It's basically an object that represents the eventual completion (or failure) of an async operation and lets you chain methods to handle the results, kind of like a callback on steroids.
I was trying to impress the new dev on the team, so I casually mentioned how I used a JavaScript Promise to fetch data from the backend API in my last project. You should've seen the look on his face when I explained how I chained the .then()
methods to handle the response - priceless!
During the code review, my teammate was questioning why I used a JavaScript Promise instead of a simple callback function. I had to resist the urge to roll my eyes and patiently explained how Promises are more readable and easier to chain than callback hell.
Understanding JavaScript Promises - This article provides a comprehensive introduction to JavaScript Promises, explaining their purpose, syntax, and how to use them effectively.
JavaScript Promises: An Introduction - This guide covers the basics of JavaScript Promises, including how to create them, handle their results, and manage errors. It also touches on more advanced topics like chaining and combining Promises.
Using Promises - JavaScript | MDN - MDN's official documentation on JavaScript Promises is a reliable resource that explains the concept in detail, along with practical examples and best practices.
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