slopeofhope81’s gists

slopeofhope81 / gist:8825339

Created February 5, 2014 14:53

Write a function extractDate that takes such a paragraph as its argument, extracts the date, and returns it as a date object.

	//"died 27/04/2006: Black Leclère"

	var p = "died 27/04/2006: Black Leclère"

	function extractDate(p) {
	function find(start, length) {
	return p.slice(start, start + length)
	}
	return new Date(find(11, 4), find(8, 2) - 1, find(5, 2))
	}

slopeofhope81 / gist:8826558

Created February 5, 2014 15:49

Write a function countZeroes, which takes an array of numbers as its argument and returns the amount of zeroes that occur in it. Use reduce

	Make the function abstract using reduce.
	function countZeroes(numbers){
	function count(total,num){
	return total+(num ===0?1:0); <<===this is ternary equation!!!
	}
	return reduce(count, 0, numbers)
	};

slopeofhope81 / gist:8826927

Created February 5, 2014 16:04

write a map and forEach function

	write a map and forEach function:

	function forEach(array, action){
	for (var i =0; i < array.length; i++){
	action(array[i]));
	}
	};

	function map(func,array){
	var result =[];

slopeofhope81 / gist:8845219

Last active August 29, 2015 13:56

defineProperty is JS

	To set attributes of a property or to create a new property with the specified attributes.
	var a = {};
	Object.defineProperty(0, "x", {value:1, writable: true, enumerable:false, configurable: true});
	Guess what this does?

	Also changing this (data property to an accessor property) =>
	Object.defineProperty(0, "x", { get: function(){ return 0} });

slopeofhope81 / gist:8968066

Last active August 29, 2015 13:56

jquery button interaction=DOM manipulation(it makes change to the DOM's representation of the page in the browser.

	$(document).ready(function(){
	$("#move_up").click(function(){
	$("#change_me").animate({top:100}, 1000);
	});
	$("#move_down").click(function(){
	$("#change_me").animate({top:400},1000)
	});
	$("#change_color").click(function(){
	$("#change_me").css("background-color","purple");
	});

slopeofhope81 / gist:8976024

Created February 13, 2014 14:32

jquery DOM manipulation #2

	$(document).ready(function () {
	$(".section").click(checkForCode);

	function getRandom(n) {
	return Math.floor(Math.random() * n);
	}
	var hideCode = function () {
	var num = getRandom(4);
	$(".section").each(function (index, value) {
	if (num == index) {

slopeofhope81 / gist:9057028

Created February 17, 2014 19:14

Making a quiz questions #1

	var allQuestions = [];
	allQuestions[0]={
	question: "what is your name?",
	choices:["steve", "kevin", "chloe","haeseong"],
	correctAnswer: 1
	};
	allQuestions[1]={
	question: "what is your passion?",
	choices:["programmer", "teacher", "scientist","home builder"],
	correctAnswer: 1

slopeofhope81 / gist:9072649

Created February 18, 2014 15:03

Now I understand the power of bind method how it will always run in the given context.

	For example, take a look at the first example below:
	1)(function(){
	var cart={
	item: "product1",
	price: 35.50,
	quantity: 2,
	buying: function(){
	alert("you bought"+this.item);
	}
	};

slopeofhope81 / gist:9093298

Created February 19, 2014 14:35

I made this quiz app that has following: 1)radio button choices 2)it will show score upon completion 3)can show any # of questions and choices4)tally the user's score and remove everything else in the form

	<html>
	<head><!--html-->
	<title>example1</title>
	<link rel="stylesheet" type="text/css" href="do.css">
	</head>
	<body>
	<div id="point"></div>

	<div id="question"></div>
	<form name="radioAnswers">

slopeofhope81 / gist:9113201

Created February 20, 2014 13:11

my latest endeavor with javascript

	function loadasync(url){
	var head=document.getElementsByTagName("head")[0];
	var script=document.createElement("script");
	script.src=url;
	head.appendChild(script);
	}

	function urlArg(){
	var args = {};
	var query = window.location.search.substring(1);

Steve Lim slopeofhope81