micro.js — A micro Javascript toolkit, for use when you miss the comfort of jQuery in vanilla JS

micro.js

Element.prototype.$ = function(query) { return this.querySelectorAll(query); };
Window.prototype.$ = function(query) { return document.querySelectorAll(query); };

Element.prototype.attr = function(attribute, value) {
  if(value != undefined) { this.setAttribute(attribute, value); }
  else { return this.getAttribute(attribute); }
};

Element.prototype.indexWithin = function() {
  var nodes = this.parentNode.childNodes;
  for(node in nodes) { if(nodes[node] == this) { return node }; }
  return -1;
};

Element.prototype.insertAfter = function(new_node, existing_node) {
  index = existing_node.indexWithin();
  siblings = this.childNodes.length;
  if(index+1<siblings) { this.insertBefore(new_node, this.childNodes[index+1]); }
  else { this.appendChild(new_node); }
};
Element.prototype.prependChild = function(node) { this.insertBefore(node, this.childNodes[0]); };