Develop Reference

delete table row using jQuery within ajax statement

I want to delete a row from the table, but the success part of ajax does not execute.
function fn_delete() {
$("a.delete").click(function () {
idProduct = $(this).parents("tr").find("td").eq(1).html();
$.ajax({
type: "POST",
url: "DeleteProduct",
data: { idProduct },
success: function () {
$(this).parents("tr").fadeOut("normal", function () {
$(this).remove();
}
});
});
};

this inside your success callback will not be the same as this in the code that makes the ajax call, unless you explicitly set the context:
$.ajax({
context: this,
data: ...
});

I don't think this is giving the value that you're expecting.
Try this:
function fn_delete() {
$("a.delete").click(function () {
idProduct = $(this).parents("tr").find("td").eq(1).html();
var myRow = $(this).parents("tr");
$.ajax({
type: "POST",
url: "DeleteProduct",
data: { idProduct },
success: function () {
$(this).parents("tr").fadeOut("normal", function () {
myRow.remove();
});
}
});
});

Ajax to call another Ajax function upon done

var App = {
actionRequest: function (url,data,callback){
var that = this;
$('#menu').panel('close');
$.mobile.loading('show');
$.when(
$.ajax({
method: 'POST',
url: url + '?' + new Date().getTime(),
data: data
})
).done(function(data,html) {
that.refreshCart();
$.mobile.loading('hide');
}
);
}
refreshCart: function(){
App.loadExternalContent('content','scripts/data_ajax.php','action=getCart','templates/cart.htm');
}
}
I need to call refreshCart in ".done". How can i write a callback function in ".done" to do so? Sorry i am new with Ajax.

var object = {
actionRequest: function(url, data, callback) {
$('#menu').panel('close');
$.mobile.loading('show');
$.ajax({
method: 'POST',
url: url + '?' + new Date().getTime(),
data: data
}).done(function(data, html) {
if ($.isFunction(callback)) {
callback();
}
$.mobile.loading('hide');
}
);
}
}
usage:
if refreshCart is function in the object you can also do this:
var object = {
actionRequest: function(url, data, callback) {
var that = this;
$('#menu').panel('close');
$.mobile.loading('show');
$.ajax({
method: 'POST',
url: url + '?' + new Date().getTime(),
data: data
}).done(function(data, html) {
// without using a callback
that.refreshCart();
$.mobile.loading('hide');
}
);
},
refreshCart: function() {
App.loadExternalContent('content', 'scripts/data_ajax.php', 'action=getCart', 'templates/cart.htm');
}
}
Here is an example of how to use ajax requests
$.ajax({
url: 'http://echo.jsontest.com/title/ipsum/content/blah',
method: 'GET'
})
.done(function(response) {
console.log(response);
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

I am assuming you are referring this code in class.
actionRequest: function (url,data,callback){
var self = this; //keep reference of current instance for more info read closures in JS
$('#menu').panel('close');
$.mobile.loading('show');
$.when(
$.ajax({
method: 'POST',
url: url + '?' + new Date().getTime(),
data: data
})
).done(function(data,html) {
self.refreshCart();
$.mobile.loading('hide');
}
);
}
refreshCart: function(){
App.loadExternalContent('content','scripts/data_ajax.php','action=getCart','templates/cart.htm');
}

Ajax function:
actionRequest: function (url,data,callback){
$('#menu').panel('close');
$.mobile.loading('show');
$.when(
$.ajax({
method: 'POST',
url: url + '?' + new Date().getTime(),
data: data
})
).done(function(data,html) {
callback();
$.mobile.loading('hide');
}
);
}
call function:
actionRequest(url, data, refreshCart);

How to set a conditional delay for making a request?

I have an array of symbols as shown below.
For each element of the array I am making an Ajax request.
var symbols = ["SSS", "SEE"]
$(document).ready(function () {
$.each(symbols, function (index, value) {
loadXMLDoc(value);
});
});
function loadXMLDoc(value) {
$.ajax({
type: 'POST',
url: 'https://ganaga/aaaa/sss',
success: function (data) {}
}
In the browser console, I see many XHR requests under pending state.
Is it possible to make the next Ajax request only when the response has been obtained for the previous array element?

var symbols = ["SSS", "SEE"]
$(document).ready(function () {
loadXMLDoc(symbols);
});
function loadXMLDoc(symbols) {
if(symbols[0]) {
$.ajax({
type: 'POST',
url: 'https://ganaga/aaaa/sss',
success: function(data){ loadXMLDoc(symbols.slice(1)) }
});
}
}
There is no value being used in loadXMLDoc in your question, I suppose you want:
url: 'https://ganaga/aaaa/'+ symbols[0],
Also, I would rename function to loadXMLDocs.

I would just use a little recursion:
var symbols = ["SSS", "SEE"]
$(document).ready(function () {
loadXMLDoc(0);
});
function loadXMLDoc(idx) {
value = symbols[idx];
if (value) {
$.ajax({
type: 'POST',
url: 'https://ganaga/aaaa/' + value,
success: function (data) {
//...
loadXMLDoc(idx+1);
}
});
}
}

Invoke the next AJAX call in the callback function.
function loadXMLDoc(n) {
var value = symbols[n];
$.ajax({
type: 'POST',
url: 'https://ganaga/aaaa/sss',
success: function (data) {
if (n < symbols.length-1) {
loadXMLDoc(n+1);
}
}
}
}
Start it with:
loadXMLDoc(0);

Javascript - Dependency injection and promises

I'm trying to pass an object around in JS (with some jQuery thrown in). :)
I want to call the FlappyBarHelper.getUserPropertyCount() method once the promise.success function has run. I've tried passing this.FlappyBarHelper to :
return $.ajax({
type: "GET",
url: 'get-the-score',
flappy: this.FlappyBarHelper,
});
But that still makes flappy undefined in promise.success
My full code is:
function Rating(FlappyBarHelper) {
this.FlappyBarHelper = FlappyBarHelper;
}
Rating.prototype.attachRaty = function(property_id)
{
var promise = this.getPropertyScoreAjax(property_id);
promise.success(function (data) {
$('#'+property_id).raty({
click: function (score, evt) {
$.ajax({
type: "GET",
url: '/set-the-score',
})
.done(function (msg) {
$('#extruderTop').openMbExtruder(true);
//**** FlappyBarHelper is undefined at this point ****///
FlappyBarHelper.getUserPropertyCount('.flap');
});
}
});
});
};
Rating.prototype.getPropertyScoreAjax = function(property_id)
{
return $.ajax({
type: "GET",
url: 'get-the-score',
});
}

Read from the documentation of ($.ajax](https://api.jquery.com/jQuery.ajax/)
The this reference within all callbacks is the object in the context option passed to $.ajax in the settings; if context is not specified, this is a reference to the Ajax settings themselves.
Therefore you should pass your variable along the multiple call you are doing:
Rating.prototype.attachRaty = function(property_id){
var promise = this.getPropertyScoreAjax(property_id);
// it's best to use done
promise.done(function (data) {
$('#'+property_id).raty({
// use proxy to keep context when the click will be received
click: $.proxy(function(score, evt) {
$.ajax({
type: "GET",
url: '/set-the-score',
// propagate your variable
FlappyBarHelper: this.FlappyBarHelper
}).done(function (msg) {
$('#extruderTop').openMbExtruder(true);
// here it should be defined
this.FlappyBarHelper.getUserPropertyCount('.flap');
});
}, this);
});
});
};
Rating.prototype.getPropertyScoreAjax = function(property_id) {
return $.ajax({
type: "GET",
url: 'get-the-score',
// propagate your variable
FlappyBarHelper: this.FlappyBarHelper
});
}
You can also consider making a closure variable:
Rating.prototype.attachRaty = function(property_id){
// here is the closure variable
var helper = this.FlappyBarHelper;
var promise = this.getPropertyScoreAjax(property_id);
// it's best to use done
promise.done(function (data) {
$('#'+property_id).raty({
click: function(score, evt) {
$.ajax({
type: "GET",
url: '/set-the-score'
}).done(function (msg) {
$('#extruderTop').openMbExtruder(true);
// you can still use the defined variable: power (and danger) of closures
helper.getUserPropertyCount('.flap');
});
}, this);
});
});
};
Rating.prototype.getPropertyScoreAjax = function(property_id) {
return $.ajax({
type: "GET",
url: 'get-the-score'
});
}

Combining Jquery and Javascript function

This is a relatively novice question. I have the following jQuery function:
$(function ()
{
$.ajax({
url: 'testapi.php',
data: "query="+queryType,
dataType: 'json',
success: function(data)
{
var id = data[0];
$('#'+divID).html(id);
}
});
});
I'm looking to name and parameterize the function so that I can call it repeatedly (with the parameters queryType and divID which are already included in the code). I've tried unsuccessfully multiple times. Would anyone have any insight?

Just stick it in a function
function doAjax(queryType, divID) {
return $.ajax({
url: 'testapi.php',
data: {query : queryType},
dataType: 'json'
}).done(function(data) {
var id = data[0];
$('#'+divID).html(id);
});
}
and use it
$(function() {
element.on('click', function() {
var id = this.id
doAjax('get_content', id);
});
});
or
$(function() {
element.on('click', function() {
var id = this.id
doAjax('get_content', id).done(function(data) {
// do something more with the returned data
});
});
});

If you're just looking for a simple function to wrap the ajax call give this a try. Place this function above the document ready code.
function callAjax(queryType, divID) {
$.ajax({
url: 'testapi.php',
data: "query="+queryType,
dataType: 'json',
success: function(data) {
var id = data[0];
$('#'+divID).html(id);
}
});
}
To call the function do this:
callAjax('YourQueryHere', 'YourDivIdHere');

function myFunction(queryType, divID)
{
$.ajax({
url: 'testapi.php',
data: "query="+queryType,
dataType: 'json',
success: function(data)
{
var id = data[0];
$('#'+divID).html(id);
}
});
}
and to call it simply use
myFunction("someQueryType", "myDiv");

function doThis(queryType, divID)
{
$.ajax({
url: 'testapi.php',
data: "query="+queryType,
dataType: 'json',
success: function(data)
{
var id = data[0];
$('#'+divID).html(id);
}
});
}