getify

// http://paulirish.com/2011/requestanimationframe-for-smart-animating/
// http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating

// requestAnimationFrame polyfill by Erik Möller
// fixes from Paul Irish and Tino Zijdel
(function() {
	var lastTime = 0;
	var vendors = ['ms', 'moz', 'webkit', 'o'];
	for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
		window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame'];

getify

// requires raf.js (polyfil)

(function(){
   var ids = {};

   function requestId(){
      var id;
       do {
        id = Math.floor(Math.random() * 1E9);
      } while (id in ids);

getify

// note: uses the native "mozDash" or "webkitLineDash" functionality if present, polyfills with manual dashed-lines drawing

// note #2: this polyfill does *not* currently work with arcs, bezier-curves, and quadratic-curves. that functionality would be theoretically possible, but is probably very hard to implement.

// note #3: it also doesn't work with rect() or strokeRect() yet, though those should be relatively straightforward to do, by manually drawing the lines using lineTo().

(function(){
	var _moveTo = CanvasRenderingContext2D.prototype.moveTo,
		_lineTo = CanvasRenderingContext2D.prototype.lineTo,
		pos = {

getify

// **********
// NOTE: this is a stupid trivial example illustrating automatic
// type-coercion, not an example of the kind of data-structure logic
// you'd ever actually use. don't miss the forest for the trees.
// Read down in the comment thread for 'myCoolString' for a slightly
// more sensible example.
//
// NOTE #2: this gist thread was spawned from a twitter discussion
// about `parseInt(0/1,19)==18`:
// https://twitter.com/getify/status/221009838006747136

getify

EventEmitter.prototype.either = function(evt,cb) {
   var self = this, orAPI = {or: bindHandler}, handlers = {};

   function bindHandler(evt,cb) {
      if (!handlers || handlers[evt]) return; 

      handlers[evt] = function(){
         for (var e in handlers) {
            self.removeListener(e,handlers[e]);
         }

getify

var xhr, form_data = new FormData();

xhr = new XMLHttpRequest();
xhr.open("POST","http://barfoo.com/upload");
xhr.setRequestHeader("Content-Type","multipart/form-data");
xhr.setRequestHeader("File-Name",file.name);
xhr.setRequestHeader("File-Size",(file.size || file.fileSize));
xhr.setRequestHeader("File-Type",file.type);
xhr.setRequestHeader("Session-ID",12345);

getify

var fs = require("fs");
var jParser = require("jParser");
var eof = false;

fs.readFile("sample.jpg",function(err,data) {
        if (!err) {
                var view = new jDataView(data, undefined, undefined, false);
                var parser = new jParser(view,{

// JPG

getify

var fs = require("fs");
var jParser = require("jParser");
var eof = false;

fs.readFile("sample.jpg",function(err,data) {
        if (!err) {
                var view = new jDataView(data, undefined, undefined, false);
                var parser = new jParser(view,{

// JPG

getify

<!-- here's the PHP'ish way of making inline decisions while constructing HTML markup -->

<select name="foobar">
   <option value="bam" <?=($foobar==="bam"?"selected":"")?>>Bam</option>
   <option value="baz" <?=($foobar==="baz"?"selected":"")?>>Baz</option>
</select>

<input type="radio" name="foobar" value="bam" <?=($foobar==="bam"?"checked":"")?>> Bam
<input type="radio" name="foobar" value="baz" <?=($foobar==="baz"?"checked":"")?>> Baz

getify

// all this `toJSON()` does is filter out any circular refs. all other values/refs,
// it passes through untouched, so it should be totally safe. see the test examples.

// only extend the prototype if `toJSON` isn't yet defined
if (!Object.prototype.toJSON) {
	Object.prototype.toJSON = function() {
		function findCircularRef(obj) {
			for (var i=0; i<refs.length; i++) {
				if (refs[i] === obj) return true;
			}