Ask HN: What is your favorite Javascript code snippet?

  var browser = (function x(){})[-5]=='x' 
               ? 'ff3' : (function x(){})[-6]=='x' 
               ? 'ff2' : /a/[-1]=='a' 
               ? 'ff'  : '\v'=='v' 
               ? 'ie'  : /a/.__proto__=='//' 
               ? 'safari' : /s/.test(/a/.toString) 
               ? 'chrome' : /^function \(/.test([].sort) 
               ? 'opera'  : 'Unknown';

  var roundThis = 54;
  var closest = Math.round(parseInt(roundThis)/20)*20;
  // output = 60

  var parts  = window.location.search.substr(1).split("&");
  var params = {};
  for (var i = 0; i < parts.length; i++) {
      var temp = parts[i].split("=");
      params[decodeURIComponent(temp[0])] = decodeURIComponent(temp[1]);
  }
  console.log(params);

  console.log(window.location.hash.substr(1).split("&"));

    var bind = function(func, context) {
      var slice = Array.prototype.slice;
      var args  = slice.call(args, 2);
      return function() {
        return func.apply(context || {}, args.concat(slice.call(arguments)));
      };
    };