< script type="text/javascript" >
var xmlHttp;
function createXMLHttpRequest(){
if(window.ActiveXObject){
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
else if(window.XMLHttpRequest){
xmlHttp = new XMLHttpRequest();
}
}
function doSearch(){
createXMLHttpRequest();
xmlHttp.onreadystatechange = handleStateChange;
xmlHttp.open("GET","http://localhost/dynamicContent.xml",true);
xmlHttp.send(null);
}
function handleStateChange(){
if(xmlHttp.readyState == 4){
if(xmlHttp.status == 200){
clearPreviousResults();
parseResults();
}
}
}
function clearPreviousResults(){
var header = document.getElementById("header");
if(header.hasChildNodes()){
header.removeChild(header.childNodes[0]);
}
var tableBody = document.getElementById("resultsBody");
while(tableBody.childNodes.length > 0){
tableBody.removeChild(tableBody.childNodes[0]);
}
}
function parseResults(){
var results = xmlHttp.responseXML;
var property = null;
var address = "";
var price = "";
var comments = "";
var properties = results.getElementsByTagName("property");
for(var i = 0; i < properties.length; i ++){
property = properties[i];
address = property.getElementsByTagName("address")[0].firstChild.nodeValue;
price = property.getElementsByTagName("price")[0].firstChild.nodeValue;
comments = property.getElementsByTagName("comments")[0].firstChild.nodeValue;
addTableRow(address,price,comments);
}
var header = document.createElement("h2");
var headerText = document.createTextNode("Results:");
header.appendChild(headerText);
document.getElementById("header").appendChild(header);
document.getElementById("resultsTable").setAttribute("boder","1");
}
function addTableRow(address,price,comments){
var row = document.createElement("tr");
var cell = createCellWithText(address);
row.appendChild(cell);
cell = createCellWithText(price);
row.appendChild(cell);
cell = createCellWithText(comments);
row.appendChild(cell);
document.getElementById("resultsBody").appendChild(row);
}
function createCellWithText(text){
var cell = document.createElement("td");
var textNode = document.createTextNode(text);
cell.appendChild(textNode);
return cell;
}
< /script >
<h1>Search Real Estate Listings</h1>
<form action="#">
Show listings from
<select>
<option value="50000">$50,000</option>
<option value="100000">$100,000</option>
<option value="150000">$150,000</option>
</select>
to
<select>
<option value="100000">$100,000</option>
<option value="150000">$150,000</option>
<option value="200000">$200,000</option>
</select>
<input type="button" value="Search" onClick="doSearch();"/>
</form>
<span id="header">
</span>
<table id="resultsTable" width="75%" border="0">
<tbody id="resultsBody">
</tbody>
</table>
关闭窗口 来源:网络 16 2007-05-08