Question

I am trying to refresh the page after a cgi execution. In my cgi, a tcp packet is sent to a port. it is called in a hidden iframe. Here is my javascript code:

function xx()
{

    iframe = document.getElementById('i');
    iframe.src = path+'?'+ac+'-'+type; // it is sth like that "a.cgi?11-1"

location.reload(true);
}

when i disable location.reload cgi works but if i enable it, cgi doesn’t work, no packet is sent. I tried to put sleep between the execution and reload but it didn’t work either.
Is there any other way to refresh the page after cgi execution?

Answer 1

You can set up an onload handler for the iframe so that the reload won’t trigger until the iframe has successfully loaded (which should mean your cgi has executed):

function xx() {

    iframe = document.getElementById('i');
    iframe.onload = function() {
        location.reload(true);
    }
    iframe.src = path+'?'+ac+'-'+type; // it is sth like that "a.cgi?11-1"
}

If you also want a time delay before the reload, you can do this:

function xx() {
    iframe = document.getElementById('i');
    iframe.onload = function() {
        setTimeout(function() {location.reload(true)}, 5000);
    }
    iframe.src = path+'?'+ac+'-'+type; // it is sth like that "a.cgi?11-1"
}