creating a pop up using just ajax - php

Question

I want to create a edit pop up form using just ajax. i.e when user clicks on a link , a pop up comes up and he edits the data and saves it. can i do this with out any ajax framework ?

Answer 1

Yes you can, you can always create XMLHttpRequest objects yourself, but using a framework will save you hours or days of coding and make sure your service has maximum browser compatibility.

Answer 2

Yes, you can use the following function which I wrote and did several weeks optimizing it.
function ajaxGET(url,span_or_div) {
var httpRequest;
if (window.XMLHttpRequest) { // Mozilla, Safari, ...
httpRequest = new XMLHttpRequest();
if (httpRequest.overrideMimeType) {
httpRequest.overrideMimeType('text/plain');
}
}
else if (window.ActiveXObject) { // IE ( yeah 200bytes wasted because of IE.. lol
try {
httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
}
catch (e) {
try {
httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e) {}
}
}
if (!httpRequest) {
alert('Giving up :( Cannot create an XMLHTTP instance');
return false;
}
httpRequest.onreadystatechange = function() {
if (httpRequest.readyState == 1) {
window.document.getElementById(span_or_div).innerHTML='Loading...';
}
if (httpRequest.readyState == 4) {
if (httpRequest.status == 200) {
document.getElementById(span_or_div).innerHTML=(httpRequest.responseText);
} else {
window.document.getElementById(span_or_div).innerHTML='<strong>Error 404</strong><br />Page Not Found.';
}
}
};
httpRequest.open('GET', url, true);
httpRequest.send('');
}