Javascript Yield example

Javascript Yield

function yfunc(prev, index, array, callback){
   	var newValue = callback(prev, index, array);
   	console.log(newValue);
	return function(){ 
		return yfunc(newValue, index++, array.push(newValue), callback)
	};
}

function yield(callback){
	return yfunc(null, 0, [], callback);
}

var oddEnum = yield(function(prev, index, array){
	return 2*index + 1;
});

oddEnum() // 1,3,4,7,9