A really cool JS library

common.js

/**
 * OVEE namespace
 */
OVEE = {
  BLOCKED_COMMENT_TEXT : 'This comment has been removed by the moderator'
};

/**
 * Number
 */
Number.prototype.pad = function( digits ) {
  return ( Math.pow( 10, digits ) + this ).toString().slice(1);
};

Number.prototype.duration = function() {
  return Math.floor( this / 60000 ) + 'min ' + Math.floor( (this % 60000) / 1000 ) + 'sec';
};

/**
 * String
 */
String.prototype.duration = function() {
  return parseInt( this, 10 ).duration();
};

/**
 * Date
 */
Date.prototype.toLocaleString = function() {
  if( isNaN( this.getTime() ) ) {
    return "Unavailable";
  } else {
    var hours = this.getHours() % 12;
    if( hours === 0 ) hours = 12;
    var time = hours + ':' + this.getMinutes().pad(2) + (this.getHours() > 11 ? 'pm' : 'am');
    return this.toLocaleDateString() + " at " + time;
  }
};

/**
 * Enumerable
 */
Array.prototype.first = function() {
  return this[0];
};

Array.prototype.last = function() {
  return this[ this.length - 1 ];
};

Array.prototype.any = function( iterator ) {
  for( var i = 0, max = this.length; i < max; ++i ) {
    if( iterator( this[i] ) ) return true;
  }
  return false;
};

Array.prototype.all = function( iterator ) {
  for( var i = 0, max = this.length; i < max; ++i ) {
    if( !iterator( this[i] ) ) return false;
  }
  return true;
};

Array.prototype.collect = Array.prototype.map;

Array.prototype.detect = function( iterator ) {
  for( var i = 0, max = this.length; i < max; ++i ) {
    if( iterator( this[i] ) ) return this[i];
  }
  return;
};

Array.prototype.select = function( iterator ) {
  var matches = [];
  for( var i = 0, max = this.length; i < max; ++i ) {
    if( iterator( this[i] ) ) matches.push( this[i] );
  }
  return matches;
};

Array.prototype.reject = function( iterator ) {
  var matches = [];
  for( var i = 0, max = this.length; i < max; ++i ) {
    if( !iterator( this[i] ) ) matches.push( this[i] );
  }
  return matches;
};

Array.prototype.inject = function( memo, iterator ) {
  for( var i = 0, max = this.length; i < max; ++i ) {
    memo = iterator( memo, this[i] );
  }
  return memo;
};

Array.prototype.clear = function() {
  this.slice( 0 );
};