sgreenfield

javascript:(function()%7Bvar%20%24rows%3D%24('%23transfers_list%20tr%3Agt(0)')%2Corders%3D%5B%5D%2CtotalQuantity%3D0%2CtotalPrice%3D0%3B%24rows.each(function()%7Bvar%20a%3D%24.trim(%24(this).find('td%3Aeq(5)').text()).split('%20')%5B0%5D*1%2Cquantity%3D%24.trim(%24(this).find('td%3Aeq(3)').text()).split('%20')%5B0%5D*1%3Borders.push(%7Bquantity%3Aquantity%2Crate%3Aa%7D)%7D)%3B%24.each(orders%2Cfunction(i%2Ca)%7Bvar%20b%3Da.rate*a.quantity%3BtotalQuantity%2B%3Da.quantity%3BtotalPrice%2B%3Db%7D)%3Balert('paid%20average%20of%3A%20'%2B(totalPrice%2FtotalQuantity)%2B'%20for%20'%2BtotalQuantity)%7D)()

sgreenfield

// Go to the URL below and execute this JavaScript to calculate your coinbase average Bitcoin purchase price and the total purchased.
// https://coinbase.com/transfers
// Bookmarklet can be found here:  https://gist.github.com/sgreenfield/9258154

var $rows = $('#transfers_list tr:gt(0)'), orders = [], totalQuantity = 0, totalPrice = 0;

$rows.each(function(){
  var rate     = $.trim( $(this).find('td:eq(5)').text() ).split(' ')[0] * 1,
      quantity = $.trim( $(this).find('td:eq(3)').text() ).split(' ')[0] * 1;
  orders.push({ quantity: quantity, rate: rate });

sgreenfield

Date.prototype.toRelativeTime = function(date) {
  var delta = date - this, units, conversions;

  conversions = {
    millisecond: 1, // ms    -> ms
    second: 1000,   // ms    -> sec
    minute: 60,     // sec   -> min
    hour:   60,     // min   -> hour
    day:    24,     // hour  -> day
    month:  30,     // day   -> month (roughly)

sgreenfield

console.clear();
var amountOfTests = 5000,
    newDate, tzDateMake, dateCreate, tzDateCreate;

console.time('new Date');
amountOfTests.times(function(){
  newDate = new Date("2010-12-26T06:00:00Z");
});
console.timeEnd('new Date');

sgreenfield

;(function($){
  //monitors keypress events and fires different event depending on whether or not the keypress actually produces a character with a value
  $.fn.keylogger = function() {
    return this.each(function() {
      $(this).keypress(function(e) {
        if ( hasValue(e) ) $(this).trigger( 'keylogger:withvalue', [String.fromCharCode(e.charCode), e] );
        else $(this).trigger( 'keylogger:novalue', e );
      });
    });

sgreenfield

//micro backbone-ish experiment with prototypal inheritance
var Vertebra = {}; //not backbone.js, not spine.js, Vertebra!

Vertebra.instance = function(){
  this.initialize(arguments);
};

Vertebra.create = (function() {
  function F(args){ return Vertebra.instance.apply(this, args); }

sgreenfield

//meta validation
//idea for dynamic validation to enable model validation to change its own validation on the fly
//example syntax below

var validation = {
  rules: [ //model attribute rules

    'recipient_type': {
      //on: true, //always on by default
      when: [

sgreenfield

//requires sugar.js (because I spent like 30 seconds on it)
//dialog source: http://stuff.mit.edu/afs/athena/activity/h/humor/Incoming/laforge.dialogue.generator

descriptor = 'electro-magnetic disruptive destructive'.words();
verbs   = 'reconfigure assemble bypass amplify re-route polarize'.words();
nouns   = 'field transducer coil dispersion phase-disruptor anus resonance sub-space tachyon induction pulse matrix baryon conduit wave-guide lepton discriminator polarization electro-magnetic frequency bandwidth antimatter diagnostic mode plasma spectral emitter'.words();
enemies = 'klingons romulans herpes'.words();

var laforge = "Captain, we're going to have to {verb1} the {descriptor1} {nouns1}, and {verb2} the {descriptor2} {nouns2} in order to prevent the {enemy} from penetrating our shields".assign({
  verb1:       verbs.sample(),

sgreenfield

$(document).keypress(function(e) {
  var code = (e.keyCode) ? e.keyCode : e.which, character;
  if(e.charCode && code !== 32 && code !== 13 && !e.altKey && !e.ctrlKey && !e.metaKey){
    character = String.fromCharCode(e.charCode);
    console.log('value: ', character);
  }
});

sgreenfield

function updateQueryStringParameter(a, k, v) {
  var re = new RegExp("([?|&])" + k + "=.*?(&|$)", "i"),
      separator = a.indexOf('?') !== -1 ? "&" : "?";

  if (a.match(re)) return a.replace(re, '$1' + k + "=" + v + '$2');
  else return a + separator + k + "=" + v;
}