I can't get a return value from Ajax

1. How can a function return a value in Ajax?
2. How do I return from Ajax?
3. How get return value from AJAX call in jQuery?
4. How do you return an array from jQuery ajax success function properly?
5. What does an Ajax call return?
6. How do I wait for Ajax response?
7. How do you return false in Ajax success?
8. Is Ajax front end or backend?
9. Is jQuery dead?
10. What happens when one Ajax call is still running and you send an another Ajax call before the data of first AJAX call comes back?
11. Does jQuery return Ajax promise?
12. How can I increase my Ajax speed?

How can a function return a value in Ajax?

var b = false; $. ajax( async: true, contentType: 'application/json; charset=utf-8', type: "POST", dataType: 'json', data: JSON. stringify(arrays), url: "MyHandler. ashx", success: function (result) b = true; , error: function () alert('Error occurred'); );

How do I return from Ajax?

You can store your promise, you can pass it around, you can use it as an argument in function calls and you can return it from functions, but when you finally want to use your data that is returned by the AJAX call, you have to do it like this: promise. success(function (data) alert(data); );

How get return value from AJAX call in jQuery?

Send Ajax Request

1. Example: jQuery Ajax Request. $.ajax('/jquery/getdata', // request url success: function (data, status, xhr) // success callback function $('p').append(data); ); <p></p> ...
2. Example: Get JSON Data. ...
3. Example: ajax() Method. ...
4. Example: Send POST Request.

How do you return an array from jQuery ajax success function properly?

“return data from ajax success” Code Answer's

1. $(document). ready(function()
2. $. ajax(
3. url: 'ajaxfile.php',
4. type: 'get',
5. dataType: 'JSON',
6. success: function(response)
7. var len = response. length;
8. for(var i=0; i<len; i++)

What does an Ajax call return?

ajax() function returns the XMLHttpRequest object that it creates. Normally jQuery handles the creation of this object internally, but a custom function for manufacturing one can be specified using the xhr option. ... abort() on the object will halt the request before it completes.

How do I wait for Ajax response?

“jquery ajax wait for response” Code Answer's

1. //jQuery waiting for all ajax calls to complete b4 running.
2. $. when(ajaxCall1(), ajaxCall2()). done(function(ajax1Results,ajax2Results)
3. //this code is executed when all ajax calls are done.
4. );
5. ​
6. function ajaxCall1()
7. return $. ajax(
8. url: "some_url.php",

How do you return false in Ajax success?

parent('form'). children('. item_number_1'). val() , success: function(result) return false; );

Is Ajax front end or backend?

JavaScript is a scripting language. In the front-end, it's used to make web pages dynamic. Additionally, it provides full-stack technologies with libraries and frameworks for both client-side and server-side scripting. AJAX.

Is jQuery dead?

At least part of the jQuery number is because it's still required as a dependency for AngularJS, as well as older versions of Bootstrap and probably many others. So while jQuery may be installed on a huge portion of the web, it's not always being used by itself. ... So jQuery is not dead yet, but dying.

What happens when one Ajax call is still running and you send an another Ajax call before the data of first AJAX call comes back?

6 Answers. Since Ajax calls are asynchronous, the application will not 'pause' until an ajax call is complete, and simply start the next call immediately. JQuery offers a handler that is called when the call is successful, and another one if an error occurs during the call. $.

Does jQuery return Ajax promise?

The jqXHR objects returned by $.ajax() as of jQuery 1.5 implement the Promise interface, giving them all the properties, methods, and behavior of a Promise (see Deferred object for more information). These methods take one or more function arguments that are called when the $.ajax() request terminates.

How can I increase my Ajax speed?

1 Answer

1. Reduce the Number of Ajax Requests. For starters, the best performance can be had by not making an Ajax request at all. ...
2. Select the Event on which AJAX request triggers wisely. ...
3. Use GET Requests When Appropriate. ...
4. Reduce the Amount of Data Transmitted. ...
5. Use Caching for recurring data.