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professional-javascript-11-ListboxMultipleSelectionsExample2.htm / htm



  <html>
      <head>
          <title>Listbox Selected Index Example</title>
          <script type="text/javascript" src="listutil.js"></script>
          <script type="text/javascript">
              function showSelectedIndexes() {
                  var oListbox = document.getElementById("selListbox");
                  var arrIndexes = ListUtil.getSelectedIndexes(oListbox);
                  alert("There are " + arrIndexes.length + " option selected."
                        + "The options have the indexes " + arrIndexes + ".");
              } 
          </script>
      </head>
      <body>
          <form>
              <select id="selListbox" size="5" multiple="multiple">
                   <option>Original Value 0</option>
                   <option>Original Value 1</option>
                   <option>Original Value 2</option>
                   <option>Original Value 3</option>
                   <option>Original Value 4</option>
              </select><br />
              Select more than one option (by using the Shift or Ctrl keys) in the listbox and click "Show Selected Indexes".<br />
              <input type="button" value="Show Selected Indexes" onclick="showSelectedIndexes()" />
         </form>
      </body>
  </html>
  


(C) Æliens 20/2/2008

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