urban-dict.js

var UrbanDictionaryWidget = Class.create({

  getRandomTerm: function() {
  	var url = '/proxy/direct?url=http://www.urbandictionary.com/random.php'

    new Ajax.Request(url, {
      method:'post',
			postBody: '',
      onSuccess: function(transport) {
				this.getDocument(transport.responseText);
      }.bind(this),
      onFailure: function() {
        alert("Failed");
      }.bind(this)
    });
  },

	getDocument: function(document) {
		var reg = /\S*define.php\?term=(\S*)"/;
		var arr = reg.exec(document);
		var term = unescape(arr[1].replace(/\+/g, " "));
		
		var targeturl = 'http://www.urbandictionary.com/define.php?term=' + escape(term);
		var url = '/proxy/direct?url=' + escape(targeturl);

    new Ajax.Request(url, {
      method:'get',
      onSuccess: function(transport) {
				this.parseDocument(transport.responseText);
      }.bind(this),
      onFailure: function() {
        alert("Failed");
      }.bind(this)
    });		
	},
	
	parseDocument: function(document) {
		var reg = /<td class=\'word\'>([\w\s]*)<\/td>/;
		var term = reg.exec(document)[1];

		var reg = /<div class='definition'>([\S\s]*?)<\/div>/;
		var definition = reg.exec(document)[1];
		
		var result = this.RENDER_TEMPLATE.evaluate({ term: term, definition: definition });

		$('urban_content').update(result);
	},
	
	RENDER_TEMPLATE: new Template(
		'<h4>#{term}</h4>#{definition}'
	)
});

var urbanWidget = new UrbanDictionaryWidget();
urbanWidget.getRandomTerm();