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(function() { // Make numbers look like strings
    var oldToString = Number.prototype.toString;
    Number.prototype.toString = function() {
        if(this == 4) { return "four"; }
        else { return oldToString.call(this); }
    };
})();

var four = new Number(4);
alert(1 + four); // shows 5

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val foo: Option[Set[Option[Char]]] = blah

val results = foo.map(_.map(_.map(bar).getOrElse(defVal))).getOrElse(Nil)

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// For each of the following code fragments:
//  a. what does the code do?
//  b. what did the author intend for it to do?
//  c. how would you fix it?
// NOTE: all code samples work exactly the same in all browsers

// 1. object literals
var data = [ { high: 100, low: 81 }, { high: 93, low: 73 }, { high: 60, low: 32 } ];
function getAverages(data) {
    var avgs = [];

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Instructions

• Solve all problems using JavaScript

Problems

1. Write a function that returns an array with the first n powers of 2. Call it twoPow.

2. Use twoPow and Array.prototype.reduce to the sum of the first 10 powers of 2.

3. Describe this call signature:

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// Create scrollLeft and scrollTop methods
jQuery.each( ["Left", "Top"], function( isScrollTop, name ) {
	var method = "scroll" + name;

	jQuery.fn[ method ] = function( val ) {
		var elem, win;

		if( val === undefined ) {
			elem = this[ 0 ];
			if( !elem ) {

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{	scopeName = 'source.js';
	comment = 'JavaScript Syntax: version 2.0';
	fileTypes = ( 'js', 'htc', 'jsx' );
	foldingStartMarker = '^.*\bfunction\s*(\w+\s*)?\([^\)]*\)(\s*\{[^\}]*)?\s*$';
	foldingStopMarker = '^\s*\}';
	patterns = (
		{	name = 'meta.class.js';
			comment = 'match stuff like: Sound.prototype = { … } when extending an object';
			match = '([a-zA-Z_?.$][\w?.$]*)\.(prototype)\s*(=)\s*';
			captures = {

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var http = require("http");
var bee = require("beeline");

var route = bee.route({
    "`preprocess`": [
        (function() {
            function sendHtml(data) {
                this.writeHead(200, { "Content-Length": data.length,
                                      "Content-Type": "text/html; charset=utf-8" });
                this.end(data);

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var fs = require("fs");
var TwoStep = require("two-step");
var jsdom = require("jsdom");

TwoStep(
	function() { fs.readFile("./cities.json", this.val()); },
	function(err, cities) {
		if(err) { throw err; }

		cities = JSON.parse(cities);

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alternativeart
announcements
askscience
BarCraft
bestof
blockbattlenet
BuildingEsports
business
codeprojects
coding

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{
	"predef": [],

	"maxerr": 150,

	"browser": true,
	"node": true,
	"esnext": true,
	"jquery": true,