How to unset an ajax loading.
- by metacortex
Hi, I have this script which loads external content:
<script type="text/javascript">
var http_request = false;
function makePOSTRequest(url, parameters) {
http_request = false;
if (window.XMLHttpRequest) {
http_request = new XMLHttpRequest();
if (http_request.overrideMimeType) {
http_request.overrideMimeType('text/html');
}
} else if (window.ActiveXObject) {
try {
http_request = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
http_request = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {}
}
}
if (!http_request) {
alert('Cannot create XMLHTTP instance');
return false;
}
http_request.onreadystatechange = alertContents;
http_request.open('POST', url, true);
http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
http_request.setRequestHeader("Content-length", parameters.length);
http_request.setRequestHeader("Connection", "close");
http_request.send(parameters);
}
function alertContents() {
if (http_request.readyState == 4) {
if (http_request.status == 200) {
result = http_request.responseText;
document.getElementById('opciones').innerHTML = result;
} else {
alert('Hubo un problema con la operación.');
}
}
}
function get(obj) {
var poststr = "port_post=" + encodeURI( document.getElementById("port-post").value );
makePOSTRequest('http://www.site.com/inc/metaform.php?opcion='+ encodeURI( document.getElementById("port-post").value ), poststr);
}
</script>
This is the select that retrieves the content:
<select name="port_post" id="port-post" onchange="get(this.parentNode);">
<option value="1">Select one...</option>
<option value="2">Pear</option>
<option value="3">Pineapple</option>
</select>
And this is the container div:
<div id="opciones">Default content</div>
All I whish to know is how I can unset the ajax loading when I change the selection to "Select one...". I wish to say, how restoring the Default content once the "Select one..." option is selected.
