javascript send one way message to php - php

Question

How can I use javascript to send a one way message to php? I would like to get the browser information from javascript and just send it to php in the background. I know I can get some of this from php, but I'd rather use javascript. Is there a way to do this without a framework like jquery?

Answer 1

Yes, you can do it with something like this:
function xmlhttpPost(strURL) {
var xmlHttpReq = false;
var self = this;
// Mozilla/Safari
if (window.XMLHttpRequest) {
self.xmlHttpReq = new XMLHttpRequest();
} else if (window.ActiveXObject) {
// IE
self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
}
self.xmlHttpReq.open('POST', strURL, true);
self.xmlHttpReq.onreadystatechange = function() {
if (self.xmlHttpReq.readyState == 4) {
alert('Here goes something');
self.xmlHttpReq.send('browser info here');
}
}
}
This will send "browser info here" as POST in the php page you pass to the function as url. I didnt test it though

Answer 2

You would have to submit an AJAX request to a PHP script. Yes, you could do it without using a framework but I wouldn't advise it.

Answer 3

You need to make an AJAX call to a PHP page, preferably using POST. Any data you want to send needs to be sent along with the request.
I recommend using a framework such as jQuery, but if you insist on using raw JavaScript, you want to research XMLHttpRequest.

Answer 4

// fix for older IE versions
// see http://blogs.msdn.com/b/xmlteam/archive/2006/10/23/using-the-right-version-of-msxml-in-internet-explorer.aspx
if( typeof window.XMLHttpRequest === 'undefined' &&
typeof window.ActiveXObject === 'function') {
window.XMLHttpRequest = function() {
try { return new ActiveXObject('Msxml2.XMLHTTP.6.0'); } catch(e) {}
try { return new ActiveXObject('Msxml2.XMLHTTP.3.0'); } catch(e) {}
return new ActiveXObject('Microsoft.XMLHTTP');
};
}
function postData(url, data, errhandler) {
var req = new XMLHttpRequest;
req.onreadystatechange = function() {
if(this.readyState === 4 && this.status !== 200 && errhandler)
errhandler(this);
};
try {
req.open('POST', url, true); // async post request
req.send(data);
}
catch(e) {
if(errhandler)
errhandler(req);
}
}