A web-testing hack to allow me to force refresh in several browsers simultaneously.

remoteCommand.js

$(function(){
    /* poll for commands to run. I mostly use it with window.location.reload(true); */
    function remoteCommand() {
        $.ajax({
            url: "/wp-content/themes/thr3/remoteCommand.php",
            cache: false,
            timeout: 100000,

            success: function(data) { 
                if (data != 'no') {
                    eval(data);
                }
                setTimeout(remoteCommand, 100);
            },
            error: function(XMLHttpRequest, textStatus, errorThrown) {
                console.log("error", textStatus + " (" + errorThrown + ")");
                setTimeout(remoteCommand, 1000);
            },
        });
    }
    remoteCommand();
});

remoteCommand.php

<?php

/* handle requests for commands. */

session_start();
$file = '/var/tmp/command.js';
if (!file_exists($file)) {
    touch($file);
}
if (!isset($_SESSION['lasttime'])) {
    $_SESSION['lasttime'] = filemtime($file);
}

$start = time();

$resp = 'no';
while (time() - $start < 30) {
    if ($_SESSION['lasttime'] == filemtime($file)) {
        usleep(100000);
        clearstatcache();
    } else {
        $resp = file_get_contents($file);
        $_SESSION['lasttime'] = filemtime($file);
        break;
    } 
}
echo $resp;
?>

See http://www.cs.unc.edu/~gb/blog/2012/02/08/remotely-refreshing-multiple-browsers-during-web-testing/ for more info.

This is a really great implementation of this idea. I simply run touch command.js and I can remotely execute my javascript. Thanks for throwing this together.