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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <pre id="output"></pre>
            
          
!
            
              //makes all objects iterable just like Maps!!! YAY
//iterates over Object.keys() (which already ignores prototype chain for us)
Object.prototype[Symbol.iterator] = function() {
    var keys = Object.keys(this)[Symbol.iterator]();
    var obj = this;
    var output;
    return {next:function() {
        if (!(output = keys.next()).done)
            output.value = [output.value, obj[output.value]];
        return output;
    }};
};

Object.prototype.something = 'bob';

var ordinaryObject = {well:'hello', there:'!'};
//true Maps are just cumbersome to create
var trueMap = new Map([['well', 'hello'], ['there', '!']]);
//now that object is iterable we can create a real Map from it
var realMap = new Map(ordinaryObject);

var buf = '';
function output(string, indent) {
	if (indent)
  	buf += '\t';
  buf += string;
  buf += '\n';
}

//problematic because it enumerates over prototypes
output('for in ordinary');
for (var name in ordinaryObject)
	output(name + ':' + ordinaryObject[name], true);
output('');

output('for of Map');
for (let pair of trueMap)
	output(pair[0] + ':' + pair[1], true);
output('fancier');
for (let [key, value] of trueMap)
	output(key + ':' + value, true);
output('');

//MAGIC! yay!
output('for of ordinary with patch');
for (let pair of ordinaryObject)
	output(pair[0] + ':' + pair[1], true);
output('fancier');
for (let [key, value] of ordinaryObject)
	output(key + ':' + value, true);
output('');

//just to prove you can create real maps from it if you felt like it
output('for of Map constructed with ordinary notation');
for (let pair of realMap)
	output(pair[0] + ':' + pair[1], true);
output('fancier');
for (let [key, value] of realMap)
	output(key + ':' + value, true);
output('');

//apparently you can just do this, though
output('for of ordinary\'s keys');
for (let key of Object.keys(ordinaryObject))
	output(key + ':' + ordinaryObject[key], true);
output('');



output('\n\n');



//note that maps force you to use .get() instead of [] notation
//outside of iterating, which is also annoying
output(trueMap.get('well'));
//but we get the best of both worlds with my way
//(well, asside from how inefficient the iterator creation is, but if you're really making maps to iterate A LOT you're probably doing something wrong)
output(ordinaryObject['well']);

document.getElementById('output').innerHTML = buf;
            
          
!
999px
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