数据传输到php文件时调用函数

Question

I am here to ask that is there any settings argument in jQuery ajax() which let us to call a function when data has transferred to php file successfully not when the data has transferred and php file parsed the code and returned a value.

I have following code:

$.ajax({
    ..
    ..
    ..
    success: function(data) {
        // do something
    }
});

But I want it like:

$.ajax({
    ..
    ..
    ..
    onTransfer: function() {
        // do something like show a div saying "Done".
    },
    success: function(data) {
        // do something
    }
});

Answer 1

You only get 1 answer from server side, what's wrong with success? If your process takes too long then you could return from script as soon as it get's started and show 'Processing your request' as result for success :

<?php

    ob_end_clean();                    // discard everything
    header("Connection: close");       // send Connection close
    ignore_user_abort(true);           // ignore user abort
    set_time_limit(0);                 // no time limit
    ini_set("memory_limit","200M");    // setup a memory usage needed
    ob_start();                        // start output buffer

    header("Content-Length: 0");       // send lenght 0
    ob_end_flush();                    // end and flush
    flush();

    // continue your script

Your script will continue to run while you receive a success answer from it.

Answer 2

You might use it like this

$.ajax({
   url: "test.html",
   context: document.body
   }).done(function() {
   $(this).addClass("done");
   });

For more details please check following link

http://api.jquery.com/jQuery.ajax/