robozevel’s gists

robozevel / underscore.cacheFor.js

Created February 2, 2014 20:19

Execute function not more than once every X milliseconds, otherwise return cached result.

	_.mixin({
	cacheFor: function(wait, fn) {
	return _.throttle(fn, wait, { trailing: false });
	}
	});

robozevel / isUsingImperialSystem.js

Created February 2, 2014 20:20

Countries using the Fahrenheit scale: USA, Puerto Rico, Jamaica, Bahamas, Guam, Belize, Virgin Islands (US), Cayman Islands and Palau. (http://en.wikipedia.org/wiki/Fahrenheit)

	function isUsingImperialSystem(countryCode) {
	return /US\|PR\|JM\|BS\|GU\|BZ\|VI\|KY\|PW/.test(countryCode);
	}

robozevel / Kilo.js

Last active August 29, 2015 13:56

	/*
	Kilo.js
	#toSize: 2048 => "2 KB"
	#toBytes: "2 KB" => 2048
	*/
	var Kilo = (function() {
	"use strict";
	var kilo = 1024;
	var sizes = { "B": 0, "KB": 1, "MB": 2, "GB": 3, "TB": 4 };
	var sizesNames = Object.keys(sizes);

robozevel / generateOfficeWebAppURL.js

Created February 11, 2014 16:13

http://office.microsoft.com/en-us/web-apps/view-office-documents-online-FX102727753.aspx

	function generateOfficeWebAppURL(url) {
	return "http://view.officeapps.live.com/op/view.aspx?src=" + encodeURIComponent(url);
	}

robozevel / isHTMLString.js

Created March 16, 2014 16:18

Detect HTML strings (extracted from jQuery's core)

	// https://github.com/jquery/jquery/blob/master/src/core/init.js#L14
	var isHTMLString = (function() {
	var rHTML = /^(?:\s(<[\w\W]+>)[^>]\|#([\w-]*))$/;
	return function(str) {
	return rHTML.test(str);
	};
	}());

robozevel / typehead.json

Created March 18, 2014 09:23

FQL Typehead

	[
	{
	"uid": "keywordSELECT",
	"subtext": "[FQL keyword]",
	"text": "SELECT"
	},
	{
	"uid": "keywordFROM",
	"subtext": "[FQL keyword]",
	"text": "FROM"

robozevel / esc.html

Created March 23, 2014 08:50

Stop propagation of the ESC key event when closing a file selection dialog

	<script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
	<label for="uploadFile">UPLOAD</label>
	<input type="file" id="uploadFile"/>
	<script>

	$("input[type='file']").on("keyup", function(e) {
	if (e.keyCode === 27) this.blur(), e.stopPropagation();
	});

	$(document).on("keyup", function(e) {

robozevel / geolocate.js

Created March 27, 2014 16:57

Geolocate using Wikimedia's Geo IP Lookup service

	var geolocate = function(callback) {
	callback = typeof callback === "function" ? callback : function(){};
	if ('Geo' in window) {
	callback(window.Geo);
	} else {
	var script = document.createElement('script');
	script.src = "https://geoiplookup.wikimedia.org/";
	script.onload = function() { callback(window.Geo) };
	document.head.appendChild(script);
	}

robozevel / underscore.whenOnline.js

Created March 30, 2014 09:16

Ensure a function is invoked only when online

	_.mixin({
	whenOnline: function(fn, context) {
	return function() {
	var args = arguments;
	context = context \|\| this;
	if (navigator.onLine) {
	fn.apply(context, args);
	} else {
	window.addEventListener('online', function online() {
	fn.apply(context, args);

robozevel / escapeSqlString.js

Created April 2, 2014 13:18

Escape SQL string (extracted from node-mysql)

	// https://github.com/felixge/node-mysql/blob/master/lib/protocol/SqlString.js
	function escapeSqlString(text) {
	return text.replace(/[\0\n\r\b\t\\\'\"\x1a]/g, function(s) {
	switch(s) {
	case "\0" : return "\\0";
	case "\n" : return "\\n";
	case "\r" : return "\\r";
	case "\b" : return "\\b";
	case "\t" : return "\\t";
	case "\x1a": return "\\Z";

Guy Levi robozevel