I have a service called paymentStrategy that get injected in my controller.  $scope.buy = function() {   paymentStrategy.buy()     .then(function(response) {    } }   This buy method from paymentStrategy triggers several methods that needs to be call...
When I reading this answer, find var g = f.call.bind(f);. I can't understand this with my first sight.  So does it has some direct meaning, and has some appropriate usage scenarios?  And further when you using call(or apply) or bind or both in ch...
If i have   promise = userService.updateUser($stateParams.userId, req);  promise.then(     function(user) {         logger.logSuccess('Updated user');         $scope.resetForm();         WizardHandler.wizard().goTo(0);         return user;...
Actaully my application is having hundreds of pages. Now i have to attach an event 'disablePage' on onSubmit of form. I don't want to go to each and every page and write:  <form name="frmname" onSubmit="disablePage();"&...
Dear stackoverflow community,  I am using application craft as a JS cloud IDE and integrating Parse's cloud database for storage.  I'm writing a subscription service and want to check to see if a user is already subscribed prior to either aut...
I'm reading a book called JavaScript patterns but there's one part where I think the guy is confusing.   The guy actually led up in the book to the klass design pattern, where he developed it piece by piece. He first he presents the problem:...
I have got the following prototype chain   SuperSuperClass  SuperClass  Class     each with a method named do.  What is the common approach for calling the respective super class method? For the moment I use <ClassName>.prototype.__proto__.<...
I'm writing a function that should work like this:  checker(3).equals(3) // true checker(3).not().equals(3) // false checker(3).not().equals(4) // true checker(3).not().not().equals(4) // false   The code I came up with:  function checker(num) {...
I am working in Angular 2, and I am making a series of async calls from a service. Some of the calls only need to be made conditionally in my call chain.  My initial call chain looks like the following:  PSEUDO CODE  this.post().flatMap( () => thi...
I am currently implementing the page object pattern in protractor/selenium.   Since every method in protractor returns a promise, for consitency the methods in my page object should also return promises.  Further more my page objects may have functio...

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