jcready

(function(){
  var log = console.log;
  console.log = function(){
    var timestamp = '['+new Date().toJSON().slice(14,-1)+']';
    if (arguments.length) {
      if (typeof arguments[0] === "string") {
        var args = Array.prototype.slice.call(arguments, 0);
        args[0] = "%s " + arguments[0];
        args.splice(1, 0, timestamp);
        return log.apply(console, args);

jcready

var audioContext, audioProcess, audioSource,
    result = document.createElement('h3'),
    output = document.createElement('span'),
    mp3 = 'http://songs.jonathancoulton.com/mp3/First%20of%20May.mp3',
    ogg = 'http://upload.wikimedia.org/wikipedia/en/4/45/ACDC_-_Back_In_Black-sample.ogg',
    gotData = false, data, audio = new Audio();
 
function connect() {
  audioContext = window.AudioContext ? new AudioContext() : new webkitAudioContext(),
  audioSource  = audioContext.createMediaElementSource( audio ),

jcready

(function(){
  var links = document.getElementsByTagName('a'),
      audio = document.getElementsByTagName('audio'),
      media = [],
      match = /\.(m3u|pls|smil|aac|aif|alac|flac|ogg|mpa|mp3|mp4|m4a|wav|wma)$/i;
  for (var i = 0; i < links.length; i++)
    if (match.test(links[i].pathname))
      media.push(links[i].href)
  for (var i = 0; i < audio.length; i++)
    if (match.test(audio[i].src))

jcready

navigator.geolocation.watchPosition(function(g){
  if (g.coords.latitude === null && g.coords.longitude === null) return;
  var c = g.coords, l = { acc: c.accuracy };
  if (c.latitude !== null) l.lat = ~~(c.latitude*10000)/10000;
  if (c.longitude !== null)l.long = ~~(c.longitude*10000)/10000;
  if (c.speed !== null) l.speed = c.speed;
  if (c.heading !== null && !isNaN(c.heading)) l.dir = c.heading;
  if (c.altitude) { l.alt = c.altitude; l.altacc = c.altitudeAccuracy }
  console.log(l);
});

jcready

Javascript log Function

Every time I start a new project, I want to pull in a log function that allows the same functionality as the console.log, including the full functionality of the Console API.

There are a lot of ways to do this, but many are lacking. A common problem with wrapper functions is that the line number that shows up next to the log is the line number of the log function itself, not where log was invoked. There are also times where the arguments get logged in a way that isn't quite the same as the native function.

This is an attempt to once and for all document the function that I pull in to new projects. There are two different options:

• The full version: Inspired by the plugin in HTML5 Boilerplate. Use this if you are writing an application and want to create a window.log function. Additionally,

jcready

function fnFormatNumber( number, decimals, dec_point, thousands_sep ) {   
  var n = number, c = isNaN(decimals = Math.abs(decimals)) ? 2 : decimals;
  var d = dec_point == undefined ? "," : dec_point;
  var t = thousands_sep == undefined ? "." : thousands_sep, s = n < 0 ? "-" : "";
  var i = parseInt(n = Math.abs(+n || 0).toFixed(c)) + "", j = (j = i.length) > 3 ? j % 3 : 0;
  var p = c ? Math.abs(n - i).toFixed(c).slice(2) : 0;
  return s + (j ? i.substr(0, j) + t : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + t) + ((Math.floor(p) > 0) ? d + p : "");
}

jcready

var typeOf = (function(_, g, u) {
  return function(o) {
    return o === g
      ? 'global'
      : o == u
        ? o === u
          ? 'undefined'
          : 'null'
        : o !== o
          ? 'NaN'

jcready

(function(){
  var differences = {},
    ignoreList = (prompt('Ignore filter (comma sep)?', 'jQuery, Backbone, _, $').split(/,\s?/) || []),
    iframe = document.createElement('iframe'),
    count = 0; ignoreList.push('prop');

  for (prop in window) {
    differences[prop] = {
      type: typeof window[prop],
      val: window[prop]

jcready

function parsePls(pls) {
  //get number of entries
  var matched = pls.match(/numberofentries=\d+/i);
  matched = matched[0].split("=");
  var numberOfEntries = matched[1];
  var i = 1;
  var files = [], file, title, length;
  
  while (i <= numberOfEntries) {
    var fileRegex = new RegExp('File'+i+'=\\S+');

jcready

function map(collection, callback, thisArg) {
  var index = -1,
      length = collection ? collection.length : 0,
      result = isArray(collection) ? Array(length) : {};

  callback = createCallback(callback, thisArg);
  if (isArray(result)) {
    while (++index < length) {
      result[index] = callback(collection[index], index, collection);
    }