I not sure where to ask this question..

TimTimTimma

I cant find agood forum online to help with this, and i know the people here are relatively helpful. So here goes.

I need alittle bit of help with some AJAX, what I want is very simple, but not sure how to do. I have searched the web and found nothing. I am developing a Text-based RPG and have a battle system. When a user takes a turn there page refreshes and the other user gets there turn, but what happens when the other user is waiting on their end, and it IS their turn. I have tried a javascript bit of code that refreshes the page every 15 or so seconds but that is alittle bit uneccesary to me, and it causes server load over time. I am looking for an ajax script that will refresh the users page for them when the database returns a value to be true. I know this can be done, because I have seen mysql database driven ajax chats which return the results from the database without any page refreshing, so it would have to be possible for a value to be found and then a command carried out that refreshes the page.

Any, and all help is appreciated on this situation Thank you.

TimTimTimma

bump pls help

shaneh1

Long before it was called AJAX we were using hidden iFrames to transport data to/from the server.

All you need to do is create an IFrame, then have a javascript timer in your parent frame that triggers a function to build a querystring (Sending parameters if needed) and refresh the iFrame with the new QS.

Then, build a page on the server that uses PHP to query the DB based on the QS and echo javascript to the page.

The parent page will wait for the iFrame to reload and then read the JS values.

You'll also need another timer to run a time-out on the iFrame so a temporary problem doesn't ever crash the app.

This is the easiest way I know of to get "AJAX" results.

thorpe

Ajax really is a spretty simple concept. Before hunting through the various javascript frameworks available you should probably try to build what you need yourself. Theres a really simple tutorial here, written by Rasmus himself.