tmeissner
/
dvb-webapp
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initial commit

T. Meissner 6 years ago
commit
60d0b76e13
3 changed files with 126 additions and 0 deletions
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  1. 3
    0
      .gitignore
  2. 27
    0
      dvb-app/index.html
  3. 96
    0
      dvb-app/scripts/haltestellen.js

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.gitignore View File 

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+.DS_Store
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+*.swp
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+*.*#*

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dvb-app/index.html View File 

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+<!DOCTYPE html>
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+<html>
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+
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+<head>
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+    <meta charset="utf-8">
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+    <title>DVB Abfahrtsmonitor</title>
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+</head>
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+
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+<body>
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+
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+    <form action="" method="get" id="search-form">
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+        <div class="section">
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+            <label for="q">Haltestelle</label>
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+            <input type="search" id="q" name="q" required placeholder="Haltestelle eingeben">
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+        </div>
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+        <div class="button-group">
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+            <button type="submit" id="btn-search">Suche</button>
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+        </div>
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+    </form>
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+
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+    <div id="output"></div>
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+
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+    <script src="scripts/haltestellen.js"></script>
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+
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+</body>
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+
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+</html>

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dvb-app/scripts/haltestellen.js View File 

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+/**
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+ * Created with JetBrains WebStorm.
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+ * User: torstenmeissner
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+ * Date: 24.02.13
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+ * Time: 22:38
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+ * To change this template use File | Settings | File Templates.
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+ */
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+
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+
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+
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+// server url
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+var serverUrl = "http://widgets.vvo-online.de/abfahrtsmonitor/";
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+
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+// xmlhttp object function
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+function getHTTPObject() {
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+
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+    console.log("xml http object function");
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+
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+    var xhr;
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+
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+    if(window.XMLHttpRequest) {
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+        xhr = new XMLHttpRequest();
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+    } else if(window.ActiveXObject) {
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+        xhr = new ActiveXObject("Msxml2.XMLHTTP");
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+    }
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+
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+    return xhr;
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+
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+}
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+
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+
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+// ajax call function
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+function ajaxCall(dataUrl, outputElement, callback) {
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+
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+    console.log("ajax function");
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+
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+    // get the xmlhttp object which is supported
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+    var request = getHTTPObject();
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+
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+    outputElement.innerHTML = "Lade Daten ...";
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+
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+    request.onreadystatechange = function() {
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+
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+        if(request.readyState === 4 && request.status === 200) {
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+
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+            //save ajax response
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+            var response = decodeHTML(request.responseText);
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+
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+            // check if callback is a function
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+            if(typeof callback === "function") {
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+                callback(response);
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+            }
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+        }
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+    };
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+
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+    request.open("get", dataUrl, true);
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+    request.send(null);
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+
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+}
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+
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+// wrap all in anonymous function to get out of global scope
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+(function() {
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+
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+    console.log("anonymous function");
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+
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+    // get the search form
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+    var searchForm = document.getElementById("search-form");
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+
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+    // haltestelle object
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+    var haltestelle = {
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+
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+        getInfo : function(event) {
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+
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+            console.log("getInfo function");
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+
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+            // prevent submit default behaviour
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+            event.preventDefault();
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+
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+            // get output area
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+            var target  = document.getElementById("output");
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+            var hstName = document.getElementById("q").value;
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+            var hstUrl  = serverUrl + "Abfahrten.do?ort=dresden&hst=" + hstName;
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+
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+            ajaxCall(hstUrl, target, function(data) {
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+
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+                target.innerHTML = "";
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+
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+                target.innerHTML = "<p>" + data + "</p>";
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+            });
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+        }
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+    };
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+
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+    //event listeners
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+    searchForm.addEventListener("submit", haltestelle.getInfo, false);
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+
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+})();  // end of anonymous function