chetanyakan

Techniques for writing great unit tests with - Javascript

Introduction

The article outlines best practices applied to the unit testing with javascript language and illustrates them by an example. We are going to focus on the client-side javascript code dependent on the angular js framework. The test uses Jasmine and Karma test frameworks, however, the setup of the project and framework is out of the scope of this article. The information about the setup could be found on the framework’s official pages. It is important to note that patterns and practices could be successfully applied to other testing frameworks, such as Jest.

unrevised6419

• Error Tracking https://sentry.io
• Error Tracking https://logrocket.com
• Localisation https://crowdin.com
• Localisation https://poeditor.com
• Auth https://auth0.com
• Continuous Integration https://travis-ci.org/
• E2E Testing https://www.cypress.io
• Cross Browser Testing https://www.browserstack.com
• Code Coverage https://codecov.io
• Serverless https://zeit.co/

davidmarquis

import { Directive, TemplateRef, ViewContainerRef } from "@angular/core";
import { isBlank } from "@angular/core/src/facade/lang";


/**
 * How to use this directive?
 *
 * ```
 * <div *ngIfMediaQuery="'(min-width: 500px)'">
 *     Div element will exist only when media query matches, and created/destroyed when the viewport size changes.

devfred

/**
 * @class
 * @description
 * Wrapper for HTML5 audio. 
 */
import {Injectable, NgZone} from 'angular2/core';
import {Observer} from 'rxjs/Observer';
import {Observable} from 'rxjs/Observable';

declare var AudioContext:any;

btroncone

Comprehensive Introduction to @ngrx/store

By: @BTroncone

Also check out my lesson @ngrx/store in 10 minutes on egghead.io!

Update: Non-middleware examples have been updated to ngrx/store v2. More coming soon!

Table of Contents

remojansen

function logClass(target: any) {
 
  // save a reference to the original constructor
  var original = target;
 
  // a utility function to generate instances of a class
  function construct(constructor, args) {
    var c : any = function () {
      return constructor.apply(this, args);
    }

jhusain

function fromEvent(dom, eventName) {
    return {
        forEach: function(observer) {
            var handler = (e) => {
                observer.onNext(e);
            };
            dom.addEventListener(eventName, handler);

            // Subscription
            return {

magicznyleszek

CSS Selectors Cheatsheet

Hi! If you see an error or something is missing (like :focus-within for few years :P) please let me know ❤️

Element selectors

Element -- selects all h2 elements on the page

h2 {

alexhawkins

var _ = {};


/*********IDENTITY**********/
_.identity = function(val) {
    return val;
};

/*********FIRST**********/
_.first = function(array, n) {

alexhawkins

'use strict';

/*****************NATIVE forEACH*********************/

Array.prototype.myEach = function(callback) {
    for (var i = 0; i < this.length; i++)
        callback(this[i], i, this);
};

//tests