A tiny javascript logger

compact-logger.js

// Create the logger singleton
window.logger = {
  "messages": [],  
  "debug": function(msg, object) { window.logger.log("debug", msg, object); },
  "warn": function(msg, object) { window.logger.log("warn", msg, object); },
  "error": function(msg, object) { window.logger.log("error", msg, object); },
  "log": function(level, msg, object) {
    window.logger.render(level, msg, object)
    window.logger.messages.push([level, msg, object]);
  },
  "render": function(level, msg, object) {
    if(window.console != undefined) {
      console.log("["+level.toUpperCase()+ "] %s (%o)", msg, object);
    }
  },
  "dump": function(levelOrObject) {
    var history = window.logger.messages;
    for(i=0; i<history.length; i++)
    {
      var msg = history[i];
      if(!levelOrObject || levelOrObject == msg[0] || levelOrObject == msg[2])
      {
        window.logger.render(msg[0], msg[1], msg[2]);
      }
    }
  }
};
// Attach the logger to jQuery collection object
jQuery.fn.log = function (msg) {
  window.logger.debug(msg, this);
  return this;
};