PHP + AJAX question

sam69

Hey folks...

I have a basic PHP query to a database.
In the while loop returning the data, I am trying to call the same ajax function that uses XMLHttpRequest and .open...

Everything works fine except that the ajax call is not getting (GET) the data from an external page fast enough... so it says, "loading" (http.readyState != 4)... On the last item from the query, the ajax function being called (again....) finally has ample time to sort the data.

How do I get the while loop to pause until the data is properly loaded? Or, how can I get ajax to tell the loop to wait until it's done?...

Any ideas?

Thanks, Sam

FatalError

Show me the code you are using, both JavaScript and PHP (maybe not the whole thing but just what you are using for this).

MarkR

sam69 wrote:
How do I get the while loop to pause until the data is properly loaded?

Don't make an AJAX call inside a loop.

Or, how can I get ajax to tell the loop to wait until it's done?...

Don't do that - use an async request with a callback function (in onreadystatechange) to notify your application when the request has completed.

Don't send more than one request at once, it's not helpful.

Mark

sam69

I thought about it and the guy above is right... Not helpful calling ajax in a while loop in php...

I made php load the data... but all other data would need to be handled one at a time... so that will work.

MarkR

Yes. You should make as few server calls as possible, and retrieve as many data as you require in one "go". It will increase efficiency, reduce server load and make the development easier.

Mark