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- // variable to en-/disable debug
- // set to 1 to enable debug log
- var DEBUG;
-
- // server url
- var serverUrl = "http://widgets.vvo-online.de/abfahrtsmonitor/";
-
-
- // xmlhttp object function
- function getHTTPObject() {
-
- // debug log
- if (DEBUG === 1) {console.log("xml http object function");}
-
- var xhr;
-
- // check for availibility if xmlhttprequest object
- if(window.XMLHttpRequest) {
- xhr = new XMLHttpRequest();
- } else if(window.ActiveXObject) {
- xhr = new ActiveXObject("Msxml2.XMLHTTP");
- }
-
- return xhr;
-
- }
-
-
- // ajax call function
- function ajaxCall(dataUrl, outputElement, callback, responseType) {
-
- // debug log
- if (DEBUG === 1) {console.log("ajax function");}
-
- // get the xmlhttp object which is supported
- var request = getHTTPObject();
-
- outputElement.innerHTML = "Lade Daten ...";
-
- request.onreadystatechange = function() {
-
- if(request.readyState === 4 && request.status === 200) {
-
- //save ajax response
- if (responseType === "json") {
- var response = JSON.parse(request.responseText);
- } else if (responseType === "xml") {
- var response = request.responseXML;
- } else {
- var response = request.responseText;
- }
-
- // check if callback is a function
- if(typeof callback === "function") {
- callback(response);
- }
- }
- };
-
- request.open("get", dataUrl, true);
- request.send(null);
-
- }
-
-
- // wrap all in anonymous function to get out of global scope
- (function() {
-
- // debug log
- if (DEBUG === 1) {console.log("anonymous function");}
-
- // get the search form
- var searchForm = document.getElementById("search-form");
-
- // haltestelle object
- var haltestelle = {
-
-
- getInfo : function(event) {
-
- // debug log
- if (DEBUG === 1) {console.log("getInfo function");}
-
- // prevent submit default behaviour
- event.preventDefault();
-
- // get output area
- var target = document.getElementById("output");
- var hstName = document.getElementById("q").value;
- var hstUrl = serverUrl + "Abfahrten.do?ort=dresden&hst=" + hstName;
-
- ajaxCall(hstUrl, target, function(data) {
-
- // debug log
- if (DEBUG === 1) {console.log("received data: " + data);}
-
- data = data.replace(/\],\[/gi, '#');
- data = data.replace(/\(.+?\)/gi, '');
- data = data.replace('ß', 'ss');
- data = data.slice(2,-2).split("#");
-
- // debug log
- if (DEBUG === 1) {console.log("parsed data: " + data);}
-
- var i;
- var y;
- var htmlOutput;
- var dataLength = data.length;
-
- // generate table header
- htmlOutput = "<table>";
- htmlOutput += "<tr>";
- htmlOutput += "<th>Linie</th>";
- htmlOutput += "<th>Richtung</th>";
- htmlOutput += "<th>Abfahrt</th>";
- htmlOutput += "</tr>";
-
- // generate table entries
- for (i = 0; i < dataLength; i++) {
- htmlOutput += "<tr>";
- var entry = data[i].split(",");
- // debug log
- if (DEBUG === 1) {console.log("part " + i + " of parsed data: " + entry);}
- for (y = 0; y < 3; y++) {
- // debug log
- if (DEBUG === 1) {console.log("part " + y + ": " + entry[y]);}
- htmlOutput += "<td>" + entry[y].slice(1,-1) + "</td>";
- }
- htmlOutput += "</tr>";
- }
-
- // close table
- htmlOutput += "</table>";
-
- // print table into web page
- target.innerHTML = htmlOutput;
- }, "text");
- }
- };
-
- //event listeners
- searchForm.addEventListener("submit", haltestelle.getInfo, false);
-
- })(); // end of anonymous function
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