accessing functions via url

Placebo

is it possible to pass parameters via url to an ajax function


i have an ajax function that loads an external html page in a div

[PHP]
function processAjax(url) {


if (window.XMLHttpRequest) { // Non-IE browsers
req = new XMLHttpRequest();
req.onreadystatechange = targetDiv;

try {
req.open("GET", url, true);
}
catch (e) {
alert(e);
}

req.send(null);
}

else if (window.ActiveXObject) { // IE
req = new ActiveXObject("Microsoft.XMLHTTP");
if (req) {
req.onreadystatechange = targetDiv;
req.open("GET", url, true);
req.send();

}
}

return false;




[/PHP]

etc etc
so wondering if i can specify the url and div all in the url [web address] so that specific div/page loads via the link


thanks

louie

Of course you can but you can also have the url set before hand
[php]
function processAjax(url,div){
.............
}
//or
var url = "http://..............."; //before the function itself
[/php]

Placebo

why cant i just state the url

so


hxxp://example.com/hello.php?processAjax(./hello2.html);

shud work?
doesnt

Liam Byrne

Placebo wrote: »

why cant i just state the url

so


hxxp://example.com/hello.php?processAjax(./hello2.html);

shud work?

Nope, it shouldn't.

The URL doesn't know what's in the php file that it's calling.

The query part of the URL is only available via $_GET or $HTTP_GET_VARS.

How you use that within your php code is up to you, but it's not designed to do what you're trying and it won't work.

You could possibly call something like

http://example.com/hello.php?fn=processAjax&param=hello2.html

and then within the php call the following:

$_GET["fn"]($_GET["param"]);

But I can think of a million security issues with that, such as (off the top of my head)

http://example.com/hello.php?fn=unlink&param=hello.php

P.S. Don't try the above if you've just created hello.php !!!!

Placebo

thanks liam, theres actually no php code,
its a wordpress site with some ajax loading external pages,

##thanks

Liam Byrne

Placebo wrote: »

thanks liam, theres actually no php code,
its a wordpress site with some ajax loading external pages,

##thanks

OK, now I'm REALLY confused because the URL in your example included "hello.php"

cgarvey

Placebo wrote: »

hxxp://example.com/hello.php?processAjax(./hello2.html);

You can use location.search to get the function name/arg from above
example. You'll need to have some onLoad event JS firing in the hello.php HTML (that is; client-side, not server-side PHP) to actually check for the function/arg and execute it. So there's no way to call a HTML file (whether it's PHP-produced is irrelevant) and have that file execute JS from the URL. You can have JS in that HTML file check & execute whatever has been specified in the URL, but it has to be the JS in the HTML that initiates that, not your mere provision of JS in the URL. If you read that a few times it'll probably make more sense!