How can I check for "undefined" in JavaScript? - Stack Overflow
Detecting an undefined object property (49 answers) How to check a not-defined variable in JavaScript (15 answers) How to handle 'undefined' in JavaScript [duplicate] (3 answers) How …
How do I check for an empty/undefined/null string in JavaScript?
As many know, (0 == "") is true in JavaScript, but since 0 is a value and not empty or null, you may want to test for it. The following two functions return true only for undefined, null, …
jquery - The 'describe' keyword in javascript - Stack Overflow
Aug 31, 2012 · Describe is a function in the Jasmine testing framework. It simply describes the suite of test cases enumerated by the "it" functions. Also used in the mochajs framework.
JavaScript unit test tools for TDD - Stack Overflow
Nov 19, 2008 · Karma or Protractor Karma is a JavaScript test-runner built with Node.js and meant for unit testing. The Protractor is for end-to-end testing and uses Selenium Web Driver …
What is the correct way to check for string equality in JavaScript ...
Aug 27, 2010 · In all other cases, you're safe to use ==. Not only is it safe, but in many cases it simplifies your code in a way that improves readability. I still recommend Crockford's talk for …
javascript - What is the `it ()` function here doing? - Stack Overflow
The following snippet of code is from angular's documentation. What is the it() function here doing (I'm assuming it has some conventional meaning because otherwise no context seems to be …
How do you performance test JavaScript code? - Stack Overflow
Sep 21, 2008 · 2 I usually just test javascript performance, how long script runs. jQuery Lover gave a good article link for testing javascript code performance, but the article only shows how …
What is “assert” in JavaScript? - Stack Overflow
while JavaScript supports console.assert(), it's just a logging method and won't interrupt current procedure if assertion failed. To bring things together and satisfy various needs, here is a tiny …
How can I unit test client-side jQuery/JavaScript code inside …
I use the following frameworks for JavaScript unit testing: QUnit As for me, it is the best choice if you want test your jQuery functions logic. It was developed by the jQuery developers and …
javascript - How to test the type of a thrown exception in Jest
I'm working with some code where I need to test the type of an exception thrown by a function (is it TypeError, ReferenceError, etc.?). My current testing framework is AVA and I can test it as a …