teckliew’s gists

teckliew / fizzBuzz.js

Created April 27, 2015 05:50

My first JS FizzBuzz (to 100).

	var x = 0, num = 0;
	while (x<100){
	num++;
	if((num%3) === 0 && (num%5) !== 0 ){
	console.log("Fizz");
	}else if((num%3) !== 0 && (num%5) === 0){
	console.log("Buzz");
	}else if((num%3) === 0 && (num%5) === 0){
	console.log("FizzBuzz");
	}else{

teckliew / checkerBoard.js

Created April 27, 2015 07:07

Creating a JS checker board grid

	//size is the dimension of the square grid
	var size = 8,
	white = " ",
	black = "#",
	rowE = "",
	rowO = "",
	grid = "";
	//even grid row
	for ( var x = 0 ; x < size; x++){
	if (x % 2 === 0){

teckliew / sumOfAllNum.js

Created June 17, 2015 19:51

The js solution to sum of all numbers from 1 to n

	//my solution
	function f(n){
	return n > 0 && n % 1 === 0 ? ((1+n)*n)/2 : false;
	};

	//good examples
	//1
	function f(n){
	return (parseInt(n) === n && n > 0) ? n*(n+1)/2 : false;
	};

teckliew / XtoYofZ.js

Created June 17, 2015 19:54

Showing X to Y of Z Products. Given the page number, page size, and the total number of product.

	//my solution
	var paginationText = function(pageNumber, pageSize, totalProducts){
	var numOfPages = Math.ceil(totalProducts/pageSize);
	var initItem = pageNumber*pageSize-(pageSize-1);
	var endItem;
	if (pageNumber === numOfPages){
	endItem = totalProducts;
	}else{
	endItem = pageSize*pageNumber;
	};

teckliew / descendingOrder.js

Created June 17, 2015 19:58

Make a function that can take any non-negative integer as a argument and return it with it's digits in descending order.

	//my example
	function descendingOrder(n){
	var digits = (""+n).split("").sort(function(a, b){return b-a});
	digits = digits.join("");
	return Number(digits);
	}

	//good examples
	//1
	function descendingOrder(n){

teckliew / toCurrency.js

Created June 17, 2015 20:00

a function that takes an integer in input and outputs a string with currency format. Ex. 123456 -> "123,456"

	//my solution using REGEX
	function toCurrency(price){
	return price.toString().replace(/(\d)(?=(\d{3})+(?!\d))/g, "$1,");
	}

	//good example
	function toCurrency(price){
	return price.toString().replace(/(\d)(?=(\d{3})+$)/g, '$1,');
	}

teckliew / ajax.js

Last active August 29, 2015 14:23

AJAX function with without jQuery. JS only.

	var ajax = {
	load : function() {
	var xhr;

	if(typeof XMLHttpRequest !== 'undefined') xhr = new XMLHttpRequest();
	else {
	var versions = ["MSXML2.XmlHttp.5.0",
	"MSXML2.XmlHttp.4.0",
	"MSXML2.XmlHttp.3.0",
	"MSXML2.XmlHttp.2.0",

teckliew / 0_reuse_code.js

Last active August 29, 2015 14:26

Here are some things you can do with Gists in GistBox.

	// Use Gists to store code you would like to remember later on
	console.log(window); // log the "window" object to the console

teckliew / shuffle.js

Last active October 6, 2015 22:45

Non-bias random array shuffle. For more about the Fisher–Yates shuffle, see the Wikipedia article and Jeff Atwood’s post, “The Danger of Naïveté” (2007). Sauce: http://bost.ocks.org/mike/shuffle/

	function shuffle(array) {
	var m = array.length, t, i;

	// While there remain elements to shuffle…
	while (m) {

	// Pick a remaining element…
	i = Math.floor(Math.random() * m--);

	// And swap it with the current element.

teckliew / if.js

Last active October 8, 2015 20:01

alternatives to if's. if statement refactored.

	//if statement
	(if ( foo ) {
	bar = "beta";
	}
	// and...
	if ( foo ) {
	bar();
	})

	//alternative

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