pyro.699 Posted January 7, 2006 Share Posted January 7, 2006 ok, you know on some install scripts, when its making the tables in the mysql database... and it tells you what itd doing, and wthout refreshing, it adds another line of text... how do they do that? Link to comment Share on other sites More sharing options...
pyro.699 Posted January 8, 2006 Author Share Posted January 8, 2006 Little help here guys Link to comment Share on other sites More sharing options...
hacknsack Posted January 8, 2006 Share Posted January 8, 2006 There are a couple of ways to do this, but I suspect they are using a xmlhttp request.Like the one here, you could arrange a request that checks a status condition:XMLHTTP RequestThe Mozilla site has an article and examples here:Ajax:Getting StartedYou should be able to do a view source on the page you are referring to and get an idea. Link to comment Share on other sites More sharing options...
pyro.699 Posted January 8, 2006 Author Share Posted January 8, 2006 umm, how do i use that...example... make "hello" appear, then "bob" appear Link to comment Share on other sites More sharing options...
hacknsack Posted January 9, 2006 Share Posted January 9, 2006 Adapting the code from this example:HTTP RequestWe can set a timeout and call a php page, this page happens to read the url value.But you could open a file and read a line.status.php <?phpheader('Content-type: text/xml');$counter = 0;if(isset($_GET['cycle']))$counter = intval($_GET['cycle']);function txMsg(){global $counter; if($counter < 10) {echo '<?xml version="1.0" encoding="ISO-8859-1"?><span id="status">We have requested an update '. $counter .' times.</span>'; }else {echo '<?xml version="1.0" encoding="ISO-8859-1"?><span id="status">Whatever it was, it\'s done...</span>'; }}txMsg();?> getStatus.html <html><head><style type="text/css">span {color: #66ff66;background-color: #000000;font: bold 1em arial;}</style><script type="text/javascript">var xmlhttp;var cycle = 0;function getStatus(){var url = 'status.php?cycle=' + (cycle++);// code for Mozilla, etc.if (window.XMLHttpRequest) { xmlhttp=new XMLHttpRequest(); xmlhttp.onreadystatechange=state_Change; xmlhttp.open("GET",url,true); xmlhttp.send(null); }// code for IEelse if (window.ActiveXObject) { xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); if (xmlhttp) { xmlhttp.onreadystatechange=state_Change; xmlhttp.open("GET",url,true); xmlhttp.send(); } }}function state_Change(){// if xmlhttp shows "loaded"if (xmlhttp.readyState==4) { // if "OK" if (xmlhttp.status==200) { document.getElementById('A1').innerHTML=xmlhttp.responseText; if(cycle <= 10) setTimeout('getStatus()', 1000); } else { alert("Problem retrieving XML data:" + xmlhttp.statusText) } }}setTimeout('getStatus()', 1000);</script></head><body><h2>Using the HttpRequest Object</h2><p><b>status:</b><span id="A1">Initializing</span></p></body></html> Hopefully this will give you an idea, Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now