0

i am writing an ajax code to collect information from a xml file but the file is not being read can someone please point out the problem for me the code is below.

<html>
  <head>
    <title></title>
    <script type="text/javascript">
	  var xmlHttpDoc = new XMLHttpRequest();
	  /*getcolor1 function*/
	  var options;
  
	  function getColor1()
	  {
		  if(xmlHttpDoc)
		  {
			  xmlHttpDoc.open("GET", "options1.php", true);
			  xmlHttpDoc.onreadystatechange = function()
			  {
					if(xmlHttpDoc.readyState==4 && xmlHttpDoc.status==200)
					{
						var xmlDocument = xmlHttpDoc.responseXML;
					/*the line below is returning null*/	
options = xmlDocument.getElementsByTagName('option');
						listOptions();
					}
			  }
			  xmlHttpDoc.send(null);
		  }
	  }
	  /*getcolor2 function*/
	  function getColor2()
	  {
		  if(xmlHttpDoc)
		  {
			  xmlHttpDoc.open("GET", "options2.php", true);
			  xmlHttpDoc.onreadystatechange = function()
			  {
					if(xmlHttpDoc.status==200 && xmlHttpDoc.readyState==4)
					{
						
					}
			  }
			  xmlHttpDoc.send(null);
		  }
	  }
	   /*setoption function*/
	  function setoption()
	  {
		  if(xmlHttpDoc)
		  {
			  xmlHttpDoc.open("GET", datasource, true);
			  xmlHttpDoc.onreadystatechange = function()
			  {
					if(xmlHttpDoc.status==200 && xmlHttpDoc.readyState==4)
					{
						
					}
			  }
			  xmlHttpDoc.send(null);
		  }
	  }
	  /*dont understand yet*/
	  function listOptions()
	  {
		  var loopIndex;
			for (loopIndex = 0; loopIndex < options.length; loopIndex++ )
			{
			  var selectControl = document.getElementById('optionList');
				for (loopIndex = 0; loopIndex < options.length; loopIndex++ )
				{
					selectControl.options[loopIndex] = new Option(options[loopIndex].firstChild.data);	
				}
			}
	  }
	</script>
  </head>
  <body>
  	<form>
      <select size="1" id="optionList" onchange="setOption()">
          <option>Select a scheme</option>
      </select>
      <span><input type="button" value="Color 1" onclick = "getColor1()"/></span>
      <span><input type="button" value="Color 2" onclick = "getColor2()"/></span>
   </form>
   <div id="targetDiv" width =100 height=100>Color this text.</div> 
  </body>
</html>
2
Contributors
1
Reply
3
Views
5 Years
Discussion Span
Last Post by PlyrJames791
This question has already been answered. Start a new discussion instead.
Have something to contribute to this discussion? Please be thoughtful, detailed and courteous, and be sure to adhere to our posting rules.