JavaScript Exercises

I'm using mocha to run a number of integration tests against an external web service. I use sup… Read more Mocha Tests Using Superagent + Promises Timeout Rather Than Fail With 'expect'

Code Snippet: let data ={}; zlFetch('http://localhost:3000/new.json') .then(respon… Read more How To Export The Response Data Obtained From A Get Api Using Fetch From One Module To Another

I have a block of code that I will be using several times within a then statement in mocha so I tur… Read more How Can I Pass Mochas Done Callback Function To Another Helper Function

I'm using node 4.5+ and bluebird. I have the following code I intend to use with then: var chec… Read more Bluebird Promise Is Undefined?

I asked a question about JS Promises in this post: I'm doing Promises wrong... What am I missin… Read more I'm Doing Promises Better, But Still Kind Of Wrong... One More Thing To Clear Up

I am thinking could it be a good approach to always return promises in functions in JavaScript? Let… Read more Should I Always Return Promises In All Functions In Javascript?

I'm using promises to call a serie of webservices, but I'd like, in some cases, use redirec… Read more Using Redirections Into Promises Chain

I am writing some JavaScript codes using Parse.com. To be honest, I have been reading how to use Pr… Read more How To Properly Use Parse / Promise?

I am trying to create an array of Promises, then resolve them with Promise.all(). I am using got, w… Read more Why Is My Array Of Promises Running Before Calling Promise.all()?

I have a file file which is surrounded by Promise function . I have a database operation inside thi… Read more How Do I Nest A Promise Inside Another Promise Function In Node.js?

Right now I use promise.deferred in a core file. This allows me to resolve promises at a central lo… Read more How To Cast Jquery $.ajax Calls To Bluebird Promises Without The Deferred Anit-pattern

I have written the below piece of code. makeRequest gets called and I want to retry this when xhr s… Read more How To Retry An Xhr Request Which Returns A Promise Recursively For Atleast N Times On Status 0

I have an interceptor in place to catch 401 errors if the access token expires. If it expires it tr… Read more Axios Interceptors Retry Original Request And Access Original Promise

I'm toying with promises in JavaScript and tried to promisify setTimeout function: function tim… Read more How To Cancel Timeout Inside Of Javascript Promise?

I am building a content scraper for a tshirt website. The goal is to enter a website through only o… Read more How Can I Rewrite This With Promises?

I need to create a business level function called 'getLocationById' which retrieves some da… Read more How To Deal With Returned Object On Error In A Promise-based Business-level Function In Node.js?

In the documentation (version 1.1) of AngularJS about interceptors, the interceptor functions all r… Read more Angularjs V1.1 Interceptor Always Have $q.when At The End

In an AnuglarJS 2 application I'd like to make Observable from chained promises. As promises pr… Read more Order Of Execution For Rxjs Observable From Chained Promises

I've just started using bluebird promises and am getting a confusing error Code Abstract var … Read more A Promise Was Created In A Handler But Was Not Returned From It

I'm using nodejs and was wondering when should I use Q defer, and when just use Promise.resolve… Read more When Should I Use Q.defer And When Just Promise.resolve/reject?