Q promises provide a fail shorthand for then when you are only interested in handling the error:var outputPromise = getInputPromise() .fail(function (error) { });If you are writing JavaScript for modern engines only or using CoffeeScript, you may use catch instead of fail....
Q promises provide a fail shorthand for then when you are only interested in handling the error:var outputPromise = getInputPromise() .fail(function (error) { });If you are writing JavaScript for modern engines only or using CoffeeScript, you may use catch instead of fail....
In this post, I’ll walk through how unhandled rejection tracking works and how to implement it in JavaScript. This is the seventh and final post in my series about creating JavaScript promises from scratch. If you haven’t already read the previous posts, I’d suggest you do befor...
Creating a JavaScript promise from scratch, Part 4: Promise.resolve() and Promise.reject() Promises created with Promise.resolve() and Promise.reject() go through a different process than when created with a constructor. Posted at October 13, 2020 by Nicholas C. Zakas Tags: JavaScript, ...
One final exercise for the reader can be to convert the Node.js API server codebase from its use of JavaScript promises over to theasync/awaittechnique. For those of you who might be interested in taking their JavaScript REST APIs to the next level, we now also havea TypeScript versionof...
This was mostly just a fun thought experiment. I love the idea of creating custom classes / data types in JavaScript. Of course, if I really wanted to get elegant, I'd proxy all of the Array methods to make sure that things like slice() and concat() returned FixedQueue() instances ra...
You may be getting an error as “(node:10824) DeprecationWarning: Mongoose:m promise(mongoose’s default promise library) is deprecated, plug in your promise library instead: http://mongoosejs.com/docs/promises.html”, here to fix this, we need to use the default promise inst...
AWS supports both the async-await and promises patterns. For more information, see the following: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Using_promises https://docs.aws.amazon.com/...
Promise Toast() function in Solid Toast solid-toast allows us to handle promises by providing a toast() function that helps us display notifications when performing async operations such as network or fetch requests. Let’s look at the code below: const notify = () => { const myPromise =...
By utilizing the setTimeoutjavascript\ function , it is possible to establish a delay of either 2 or 3 minutes. This function will wait for the designated amount of time (in this case, 3 seconds) before executing any code within it. Therefore, if you desire a 2-minute delay, simply mod...