bluepnume’s gists

bluepnume / classes.js

Created May 19, 2017 20:13

	// Register a pair of ES6 classes called "Animal" and "Cat" with inheritance, so I can do:

	var animal = new Animal();
	animal.walk(); // logs 'The Animal walked'

	var cat = new Cat();
	cat.walk(); // logs 'The Cat walked'
	cat.meow(); // logs 'The Cat meowed'
	console.log(cat instanceof Cat); // logs true
	console.log(cat instanceof Animal); // logs true

bluepnume / composition.js

Created May 19, 2017 20:16

	// Register a pair of ES6 classes called "Animal" and "Cat" without inheritance, so I can do:

	var animal = new Animal();
	animal.walk(); // logs 'The Animal walked'

	var cat = new Cat();
	cat.walk(); // logs 'The Cat walked'
	cat.meow(); // logs 'The Cat meowed'
	console.log(cat instanceof Cat); // logs true
	console.log(cat instanceof Animal); // logs false

bluepnume / parallel-ajax.js

Created June 5, 2017 15:22

	// Here's a mock ajax function

	function ajax(url, callback) {
	setTimeout(function() {
	if (Math.random() < 0.25) {
	callback(new Error(`Something went wrong calling ${url}`))
	} else {
	callback(null, {
	url: url,
	data: {

bluepnume / async.parallel.js

Created June 5, 2017 15:29

	// Implement async.parallel

	// It should take: 1. An array of asynchronous functions, 2. A final callback
	// It should run all of the functions in parallel (just like in the ajax exercise)
	// When all the calls are complete, it should call finalCallback with an array of the results from each call
	// If there is any error, it should call finalCallback with the first error that comes from any of the functions
	// It should only call finalCallback one time, either with an error, or with an array of results

	async.parallel = function(functions, finalCallback) {

bluepnume / credit-card-field

Created June 8, 2017 16:23



	// Create a form with:
	// * A text field for a credit card number
	// * A button to submit the credit card
	//
	// Requirements:
	//
	// - The page should do some client side validation, and only allow credit card numbers which are:
	// * 16 digits long

bluepnume / interview.js

Last active June 13, 2017 05:28

	// 1. Create a web form with a text box and a button. When the button is pressed, it should output a base64 encoded version of the text onto the page

	// 2. Implement Array::map()

	// 3. Implement Array::forEach()

	// 4. Create a web form with a text field and a button. I should be able to enter a new word, press the button, and it should add my word to the page and keep all of the words that have been added in alphabetical order.

	// 5. Create a 3x3 grid on the page and let me click on each grid element. This should toggle each square between black and white.

bluepnume / async.js

Created June 14, 2017 02:06

	function getPerson(name) {
	let result = ajax('/api/person/' + name);
	return result.person;
	}

	function getPersonDateOfBirth(name) {
	let person = getPerson(name);
	return person.dob;
	}

bluepnume / interview2.js

Last active June 14, 2017 22:10

	// 1. Write a `until(condition, finalCallback)` function that calls the `condition` function until the result is truthy, then calls the final callback

	function waitUntilUserLoggedIn() {
	until(function(callback) {
	ajax('/api/user', function(err, user) {
	if (err) {
	callback(err);
	} else {
	callback(null, user.is_logged_in ? true : false)
	}

bluepnume / createPayment.js

Created June 15, 2017 18:14

	'use strict';

	const request = require('request-promise');



	const ENV = 'sandbox';

	const CLIENT_ID = 'AZDxjDScFpQtjWTOUtWKbyN_bDt4OgqaF4eYXlewfBP4-8aqX3PiV8e1GWU6liB2CUXlkA59kJXE7M6R';

bluepnume / scrollmagic_broken.html

Last active July 18, 2017 20:39

	<!DOCTYPE html>

	<head>
	<meta http-equiv="X-UA-Compatible" content="IE=edge" />
	<script src="https://www.paypalobjects.com/api/checkout.js"></script>
	<script src="http://cdnjs.cloudflare.com/ajax/libs/ScrollMagic/2.0.5/ScrollMagic.min.js"></script>
	</head>

	<body>
	<div id="container">

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