Rohit Vighne rvighne
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| /* | |
| Copyright (c) 2014 Rohit Vighne | |
| License: The MIT License (MIT) | |
| */ | |
| var crop = (function(document) { | |
| "use strict"; | |
| var canvas = document.createElement('canvas'); | |
| var ctx = canvas.getContext('2d'); |
rvighne
/ shuffle.js
Created
February 8, 2014 20:03
Most obfuscated function to shuffle an array, ever. Adapted from this code: http://jsfromhell.com/array/shuffle. There are no guarantees that it is a good approach; see https://gist.github.com/rohit-vighne/6946301 for something more practical.
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| function shuffle(v){for(var j,x,i=v.length;i;j=~~(Math.random()*i),x=v[--i],v[i]=v[j],v[j]=x);} |
rvighne
/ deltaNow.js
Created
February 17, 2014 02:47
Chooses the highest precision and fastest method to get a timestamp for computing a delta.
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| var now; | |
| try { | |
| now = performance.now.bind(performance); | |
| } catch (e) { | |
| if (Date.now) { | |
| if (Date.now.bind) { | |
| now = Date.now.bind(Date); | |
| } else { | |
| now = function() { | |
| return Date.now(); |
rvighne
/ markthru.js
Last active
August 29, 2015 14:00
Markthru interleaves the given character (specified by Unicode) between the characters of a string. It's especially useful for applying Unicode combining characters to a string, and in fact defaults to striking the text out.
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| function markthru (str, char) { | |
| char = String.fromCharCode(char || 822); | |
| return char + str.split('').join(char); | |
| } | |
| // A.K.A. "strikethrough" when second argument is omitted. |
rvighne
/ barely-valid.html
Created
May 31, 2014 05:15
How to make all your friends twitch in horror. This is a perfectly valid HTML5 document that defies all conventions about start and end tags. Feel free to fork it.
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| <!DOCTYPE html> | |
| <title>A Perfectly Valid HTML Document</title> | |
| <meta charset="utf-8"> | |
| <p>A paragraph | |
| <p>Another paragraph | |
| <p>The last paragraph | |
| <ul> | |
| <li>A list | |
| <li>Green eggs |
rvighne
/ string-extras.js
Created
June 19, 2014 21:31
Highly performant ES6 String extras polyfills for modern browsers.
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| if (!('startsWith' in String.prototype)) | |
| Object.defineProperty(String.prototype, 'startsWith', { | |
| value: function (searchString, position) { | |
| if (Object.prototype.toString.call(searchString) === "[object RegExp]") | |
| throw new TypeError("The search string cannot be a regular expression."); | |
| if (position === undefined) | |
| position = 0; | |
| else | |
| position = Math.min(Math.max(position, 0), this.length); | |
| return this.lastIndexOf(searchString, position) === position; |
rvighne
/ scrollend.js
Last active
August 29, 2015 14:04
Fires an event "scrollend" on the window object when the user has stoppped scrolling -- very useful for saving resources in scroll-focused applications.
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| /* | |
| The MIT License (MIT) | |
| Copyright (c) 2014 Rohit Vighne | |
| Permission is hereby granted, free of charge, to any person obtaining a copy | |
| of this software and associated documentation files (the "Software"), to deal | |
| in the Software without restriction, including without limitation the rights | |
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| copies of the Software, and to permit persons to whom the Software is |
rvighne
/ isWeekday.js
Created
July 23, 2014 22:39
Checks whether a Date object represents a weekday, where a weekday is any of the days Monday to Friday.
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| Object.defineProperty(Date.prototype, 'isWeekday', { | |
| value: function(UTC) { | |
| var day = (UTC ? this.getUTCDay : this.getDay)(); | |
| if (day === 0 || day === 6) | |
| return false; | |
| else | |
| return true; | |
| }, | |
| writable: true, configurable: true |
rvighne
/ deepFreeze.js
Last active
August 29, 2015 14:04
Deep-freeze an object (freeze the object and all objects inside it). See the native Object.freeze, which only does a shallow freeze. It is safe against circular structures.
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| Object.deepFreeze = function deepFreeze(obj) { | |
| this.freeze(obj) | |
| for (var key in obj) { | |
| var prop = obj[key] | |
| if (obj.hasOwnProperty(key) && prop instanceof this && !this.isFrozen(prop)) | |
| this.deepFreeze(prop) | |
| } | |
| return obj |
rvighne
/ favicanvas.js
Created
August 3, 2014 19:26
Exposes a global canvas context that renders to the page's favicon. Works in all browsers supporting Canvas 2D.
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| /* | |
| The MIT License (MIT) | |
| Copyright (c) 2014 Rohit Vighne | |
| Permission is hereby granted, free of charge, to any person obtaining a copy | |
| of this software and associated documentation files (the "Software"), to deal | |
| in the Software without restriction, including without limitation the rights | |
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| copies of the Software, and to permit persons to whom the Software is |
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