gistfile1.txt

var $ = function (selector) {
  var elements = [];
	var classPosition = selector.split('').indexOf(".");
	var idPosition = selector.split('').indexOf("#");
	var selectorArray = selector.split("");


	if ( classPosition === -1 && idPosition === -1){
			var elementCollections = document.getElementsByTagName(selector);
	  	for (var i = 0; i < elementCollections.length; i++) {
	  				elements.push(elementCollections[i])
	  	}

	}else if (classPosition > -1 && idPosition === -1 ){
			if (classPosition === 0)  {
				selectorArray.shift();
			 	elements = document.getElementsByClassName(selectorArray.join(""));

			}else {
				var tagElem = selectorArray.slice(0,classPosition).join("");
				elements.push(document.getElementsByTagName(tagElem)[0]);
			}

	}else if ( idPosition > -1 && classPosition === -1){
			if (idPosition === 0) {
				selectorArray.shift();
				elements.push(document.getElementById(selectorArray.join("")));

			}else {

				var inputName = selectorArray.slice(0,idPosition).join("");
				var elem = document.getElementsByTagName(inputName);
				elements.push(elem);

			}

	}else if (idPosition > -1 && classPosition > -1){
			if (idPosition < classPosition) {
				var selectorIdTag = selectorArray.slice(idPosition,classPosition);
				selectorIdTag.shift();


				elements.push(document.getElementById(selectorIdTag.join("")));

			}else{
				var selectorClassTag = selectorArray.slice(classPosition,idPosition);
				selectorClassTag.shift();
				var firstElem = document.getElementsByClassName(selectorClassTag.join(""));
				elements.push(firstElem[0])

			}



	}

  return elements;
}