CODE EXAMPLE FOR JAVASCRIPT

jquery like selector in javascript

var domElement = function(selector) {
 this.selector = selector || null;
 this.element = null;
};
domElement.prototype.init = function() {
 switch (this.selector[0]) {
 case ‘<’:
 var matches = this.selector.match(/<([w-]*)>/);
 if (matches === null || matches === undefined) {
 throw ‘Invalid Selector / Node’;
 return false;
 }
 var nodeName = matches[0].replace(‘<’, ‘’).replace(‘>’, ‘’);
 this.element = document.createElement(nodeName);
 break;
 default:
 this.element = document.querySelector(this.selector);
 }
};
domElement.prototype.on = function(event, callback) {
 var evt = this.eventHandler.bindEvent(event, callback, this.element);
}
domElement.prototype.off = function(event) {
 var evt = this.eventHandler.unbindEvent(event, this.element);
}
domElement.prototype.val = function(newVal) {
 return (newVal !== undefined ? this.element.value = newVal : this.element.value);
};
domElement.prototype.append = function(html) {
 this.element.innerHTML = this.element.innerHTML + html;
};
domElement.prototype.prepend = function(html) {
 this.element.innerHTML = html + this.element.innerHTML;
};
domElement.prototype.html = function(html) {
 if (html === undefined) {
 return this.element.innerHTML;
 }
 this.element.innerHTML = html;
};
domElement.prototype.eventHandler = {
 events: [],
 bindEvent: function(event, callback, targetElement) {
 this.unbindEvent(event, targetElement);
 targetElement.addEventListener(event, callback, false);
 this.events.push({
 type: event,
 event: callback,
 target: targetElement
 });
 },
 findEvent: function(event) {
 return this.events.filter(function(evt) {
 return (evt.type === event);
 }, event)[0];
 },
 unbindEvent: function(event, targetElement) {
 var foundEvent = this.findEvent(event);
 if (foundEvent !== undefined) {
 targetElement.removeEventListener(event, foundEvent.event, false);
 }
 this.events = this.events.filter(function(evt) {
 return (evt.type !== event);
 }, event);
 }
};
$ = function(selector) {
 var el = new domElement(selector);
 el.init();
 return el;
}