Disable Button while AJAX Request - ajax

Question

I'm trying to disable a button after it's clicked. I have tried:
$("#ajaxStart").click(function() {
$("#ajaxStart").attr("disabled", true);
$.ajax({
url: 'http://localhost:8080/jQueryTest/test.json',
data: {
action: 'viewRekonInfo'
},
type: 'post',
success: function(response){
//success process here
$("#alertContainer").delay(1000).fadeOut(800);
},
error: errorhandler,
dataType: 'json'
});
$("#ajaxStart").attr("disabled", false);
});
but the button is not getting disabled. When I remove $("#ajaxStart").attr("disabled", false); the button gets disabled.
While this is not working as expected, I think the code sequence is correct. Any help will be appreciated.

Answer 1

Put $("#ajaxStart").attr("disabled", false); inside the success function:
$("#ajaxStart").click(function() {
$("#ajaxStart").attr("disabled", true);
$.ajax({
url: 'http://localhost:8080/jQueryTest/test.json',
data: {
action: 'viewRekonInfo'
},
type: 'post',
success: function(response){
//success process here
$("#alertContainer").delay(1000).fadeOut(800);
$("#ajaxStart").attr("disabled", false);
},
error: errorhandler,
dataType: 'json'
});
});
This will ensure that disable is set to false after the data has loaded... Currently you disable and enable the button in the same click function, ie at the same time.

Answer 2

In your code, you just disable & enable the button on the same button click,.
You have to enable it inside the completion of AJAX call
something like this
success: function(response){
$("#ajaxStart").attr("disabled", false);
//success process here
$("#alertContainer").delay(1000).fadeOut(800);
},

Answer 3

I have solved this by defining two jquery functions:
var showDisableLayer = function() {
$('<div id="loading" style="position:fixed; z-index: 2147483647; top:0; left:0; background-color: white; opacity:0.0;filter:alpha(opacity=0);"></div>').appendTo(document.body);
$("#loading").height($(document).height());
$("#loading").width($(document).width());
};
var hideDisableLayer = function() {
$("#loading").remove();
};
The first function creates a layer on top of everything. The reason the layer is white and completely opaque, is that otherwise, IE allows you to click through it.
When doing my ajax, i do like this:
$("#ajaxStart").click(function() {
showDisableLayer(); // Show the layer of glass.
$.ajax({
url: 'http://localhost:8080/jQueryTest/test.json',
data: {
action: 'viewRekonInfo'
},
type: 'post',
success: function(response){
//success process here
$("#alertContainer").delay(1000).fadeOut(800);
hideDisableLayer(); // Hides the layer of glass.
},
error: errorhandler,
dataType: 'json'
});
});

Answer 4

I solved this by using global function of ajax
$(document).ajaxStart(function () {
$("#btnSubmit").attr("disabled", true);
});
$(document).ajaxComplete(function () {
$("#btnSubmit").attr("disabled", false);
});
here is documentation link.

Answer 5

The $.ajax() call "will not block" -- that means it will return immediately, and then you enable the button immediately, so the button is not disabled.
You can enable the button when the AJAX is successful, has error, or is otherwise finished, by using complete: http://api.jquery.com/jQuery.ajax/
complete(XMLHttpRequest,
textStatus)
A function to be
called when the request finishes
(after success and error callbacks are
executed). The function gets passed
two arguments: The XMLHttpRequest
object and a string categorizing the
status of the request ("success",
"notmodified", "error", "timeout", or
"parsererror"). This is an Ajax Event.