Ajax not working properly - javascript

Bear with me I'm my javascript is a little rusty. So I'm trying to use a call by ajax to a PHP file and give it a plan type then make sense of it check to see if it then return a true or false if some allowed slots are less than some slots used up for the plan. Here is the Form in XHTML.
<form method="post" action="/membership-change-success" id="PaymentForm">
<input type="hidden" name="planChosen" id="planChosen" value="" />
</form>
On the same file. The ( < PLAN CHOICE > ) gets parsed out to the current plan.
<script>
var hash = window.location.hash;
var currentPlan = "( < PLAN CHOICE > )";
$(".planChoice").click(function(event){
var isGood=confirm('Are you sure you want to change your plan?');
var success;
$("#planChosen").val($(this).data("plan"));
$.ajax({
url: '/ajax/planCheck.php',
type: "POST",
dataType: 'json',
data: ({plan: $(this).data("plan")}),
success: function (data) { //This is what is not working I can't get it to return true
success = data;
}
});
if(success) {
if (isGood) {
$("#PaymentForm").submit();
}
window.location = '/membership-change-success';
} else {
alert('Please make sure you deactivate your listings to the appropriate amount before you Downgrade.')
}
});
My PHP for the ajax response looks like this.
<?php
require ('../includes/common.php');
include_once ('../includes/db-common.php');
require ('../includes/config.php');
$membership = new membership($dbobject);
$listing = new listing($dbobject);
$totalAvailableListings = ($membership->get_listingsAmount($_POST['plan']));
if($totalAvailableListings>=$listing->get_active_listings($user->id)){
echo json_encode(true); // I've tried with out jason_encode too
} else {
echo json_encode(false);
}
And that's pretty much it if you have any suggestions please let me know.
So I've tried to do it another way.
$(".planChoice").click(function (event) {
var isGood = confirm('Are you sure you want to change your plan?');
var success;
$("#planChosen").val($(this).data("plan"));
if (false) {
if (isGood) {
$("#PaymentForm").submit();
alert('you did it');
}
} else {
alert(isSuccessful($(this).data("plan")));
//alert('Please make sure you deactivate your listings to the appropriate amount before you downgrade.');
}
});
and I have an ajax function
function isSuccessful(plan) {
return $.ajax({
url: '/ajax/planCheck.php',
type: "POST",
dataType: 'json',
data: {plan: plan}
});
}
The alert tells me this [object XMLHttpRequest]
any suggestions?

$.ajax() returns results asynchronously. Use .then() chained to $.ajax() call to perform task based on response
$.ajax({
url: '/ajax/planCheck.php',
type: "POST",
dataType: 'json',
data: {plan: $(this).data("plan")}
})
.then(function(success) {
if (success) {
$("#PaymentForm").submit();
}
// if `form` is submitted why do we need to set `.location`?
// window.location = '/membership-change-success';
} else {
alert('Please make sure you deactivate your listings to the appropriate amount before you Downgrade.')
}
}, function err(jqxhr, textStatus, errorThrown) {
console.log(errorThrow)
})

You should use the following form for your ajax call
$.ajax({
url: '/ajax/planCheck.php',
type: "POST",
dataType: 'json',
data: ({plan: $(this).data("plan")}),
success: success = data
})
.done(function(response) {
if(success) {
if (isGood) {
$("#PaymentForm").submit();
}
window.location = '/membership-change-success';
}
else {
alert('Please make sure you deactivate your listings to the
appropriate amount before you Downgrade.')
}
});
the .done() clause ensures that you perform that code after the ajax call is finished and the response is obtained.

Related

Codeigniter & Ajax - Condition statement in javascript

Im quiet confused with this code. Im reading this code of ajax which inserts the data automatically. but what im confused is this line if(result=='12') then trigger ajax what does 12 means why it should be 12 then conditioned to before ajax. Apparently im still learning ajax thanks. P.S this is working well btw im just confused with the code
here is the full code of the create function javascript / ajax
$('#btnSave').click(function(){
var url = $('#myForm').attr('action');
var data = $('#myForm').serialize();
//validate form
var empoyeeName = $('input[name=txtEmployeeName]');
var address = $('textarea[name=txtAddress]');
var result = '';
if(empoyeeName.val()==''){
empoyeeName.parent().parent().addClass('has-error');
}else{
empoyeeName.parent().parent().removeClass('has-error');
result +='1'; //ALSO THIS NUMBER 1 WHY SHOULD IT BE 1?
}
if(address.val()==''){
address.parent().parent().addClass('has-error');
}else{
address.parent().parent().removeClass('has-error');
result +='2'; //ALSO THIS NUMBER 2 WHY SHOULD IT BE 2?
}
if(result=='12'){ //HERE IS WHAT IM CONFUSED
$.ajax({
type: 'ajax',
method: 'post',
url: url,
data: data,
async: false,
dataType: 'json',
success: function(response){
if(response.success){
$('#myModal').modal('hide');
$('#myForm')[0].reset();
if(response.type=='add'){
var type = 'added'
}else if(response.type=='update'){
var type ="updated"
}
$('.alert-success').html('Employee '+type+' successfully').fadeIn().delay(4000).fadeOut('slow');
showAllEmployee();
}else{
alert('Error');
}
},
error: function(){
alert('Could not add data');
}
});
}
});
As I have explained in my commentaries, and since you wanted an example. This is how I will proceed in order to avoid checking for result == '12':
$('#btnSave').click(function()
{
var url = $('#myForm').attr('action');
var data = $('#myForm').serialize();
// Validate form
var empoyeeName = $('input[name=txtEmployeeName]');
var address = $('textarea[name=txtAddress]');
var formValid = true;
if (empoyeeName.val() == '')
{
empoyeeName.parent().parent().addClass('has-error');
formValid = false;
}
else
{
empoyeeName.parent().parent().removeClass('has-error');
}
if (address.val() == '')
{
address.parent().parent().addClass('has-error');
formValid = false;
}
else
{
address.parent().parent().removeClass('has-error');
}
// If form is not valid, return here.
if (!formValid)
return;
// Otherwise, do the ajax call...
$.ajax({
type: 'ajax',
method: 'post',
url: url,
data: data,
async: false,
dataType: 'json',
success: function(response)
{
if (response.success)
{
$('#myModal').modal('hide');
$('#myForm')[0].reset();
var type = '';
if (response.type=='add')
type = 'added';
else if (response.type=='update')
type ="updated";
$('.alert-success').html('Employee ' + type + 'successfully')
.fadeIn().delay(4000).fadeOut('slow');
showAllEmployee();
}
else
{
alert('Error');
}
},
error: function()
{
alert('Could not add data');
}
});
});
It's just checking existence of values and appending string to it.
if(empoyeeName.val()=='')
This check empty name and add error if name is empty. else it concat 1 to result.
if(address.val()=='')
This check empty address and add error if address is empty. else it concat 2 to result.
So if both of them are non empty that means result will be 12 and than only you make ajax call else show error.

Display js code in php method ajax

I run the PHP code by ajax method with the click of a button.
$(".btn_ranking").one('click', function(e) {
e.preventDefault();
var name = localStorage.getItem('name');
var time = localStorage.getItem('timer_end');
$.ajax({
url: "php/file.php",
method: "POST",
data: {
name: name,
time: time
}
});
});
I would like the file.php to be able to run the js code, for example:
if ($time < $_SESSION['time']) {
[...]
}
else {
echo '<script>alert("lol");</script>';
}
And that when the button .btn_ranking on the page is pressed, an 'lol' alert will be displayed. If it is possible?
you can echo a response to the AJAX call and then run the JS according to the response..
$(".btn_ranking").one('click', function(e) {
e.preventDefault();
var name = localStorage.getItem('name');
var time = localStorage.getItem('timer_end');
$.ajax({
url: "php/file.php",
method: "POST",
data: { name: name, time: time },
success: function (data) {
if(data==1){
//do this
}else if(data==2){
//do that
alert('LOOL');
}
}
});
});
PHP CODE:
if ($time < $_SESSION['time']) {
echo '1';
}
else {
echo '2';
}
You can't said to a server-side script to use javascript.
What you have to do is to handle the return of you'r ajax and ask to you'r front-side script to alert it. Something like that :
file.php :
if ($time < $_SESSION['time']) {
[...]
}
else {
echo 'lol';
exit();
}
Front-side :
$(".btn_ranking").one('click', function(e) {
e.preventDefault();
var name = localStorage.getItem('name');
var time = localStorage.getItem('timer_end');
$.ajax({
url: "php/file.php",
method: "POST",
data: {
name: name,
time: time
},
success : function(data) {
alert(data);
}
});
});
When you used ajax for call php script, everything will be print in the return of the php code will be return to the HTTP repsonse and so be on the Ajax return function as params.
Ok .. First change your js code to handle answer from php script:
$(".btn_ranking").one('click', function(e) {
e.preventDefault();
var name = localStorage.getItem('name');
var time = localStorage.getItem('timer_end');
$.ajax({
url: "php/file.php",
method: "POST",
data: { name: name, time: time }
success: function(data) {
console.log(data);
// check if it is true/false, show up alert
}
});
});
Then change php script (file.php), something like that:
$response = [];
if ($time < $_SESSION['time']) {
$response['data'] = false;
}
else {
$response['data'] = true;
}
return json_encode($response);
Something like that is the idea :) When u send ajax with POST method get variables from there, not from $_SESSION :)
U can see good example here

How to delay ajax call on keypress?

I have an input box where I'm doing an AJAX GET to check if the email is within my database. I'm simply checking for an email address and if it's within the database, we retrieve true/else false. So depending on the return I display either a tick or cross image.
$.ajax({
url: '/api/user/emailaddress/' + emailAddress,
type: 'GET',
dataType: 'json',
success: function(data) {
if (data===true) {
$(".email-address-validator").removeClass("success");
$(".email-address-validator").addClass("error");
}
}
});
Each time a key is pressed within the input box field, this gets called. The problem that I thought might prop up is if someone looks at this file and see's that I'm doing an AJAX GET request on the field that they might just keep pressing keys on that particular input box.
Q: How can I set a timeout on this, for around 5 seconds so a user doesn't just keep spamming the box?
You could set a flag to handle this scenario. Something like this is much better than a timer.
var waitingForResponse= false;
function isValidEmail () {
if (!waitingForResponse) {
waitingForResponse = true;
$.ajax({
url: '/api/user/emailaddress/' + emailAddress,
type: 'GET',
dataType: 'json',
success: function(data) {
waitingForResponse= false;
if (data===true) {
$(".email-address-validator").removeClass("success");
$(".email-address-validator").addClass("error");
}
}
});
}
}
This design pattern will prevent subsequent requests until the first response is received. If you need a further interval between requests than this suggestion, then you can wrap the waitingForResponse flag in a setTimeout function inside the success callback. Like so:
var waitingForResponse= false;
function isValidEmail () {
if (!waitingForResponse) {
waitingForResponse = true;
$.ajax({
url: '/api/user/emailaddress/' + emailAddress,
type: 'GET',
dataType: 'json',
success: function(data) {
setTimeout(function () {
waitingForResponse= false;
}, 5000);
if (data===true) {
$(".email-address-validator").removeClass("success");
$(".email-address-validator").addClass("error");
}
}
});
}
}

How to call setinterval function in another function is not working

I want to display Updated records count when Ajax process is going on. When i click on start process button updateRecords()function will execute and it will update records status from open to waiting status one by one in database.So at the same time i want display the waiting records count .For this when user click on strat process button i want to call displayWaitingRecords() using setinterval.
I am calling that function like this from updateRecords()
clear_Process = setInterval(function(){displayWaitingRecords()},200);
But displayWaitingRecords() will not call until updateRecords() process completes.But my requirement is displayWaitingRecords() also will execute simaltaniously with updateRecords().
Function to display updated record count
function displayWaitingRecords()
{
jQuery.ajax({
type: 'GET',
crossDomain:true,
async: false,
url: "/curlRRQCount.php",
success: function(count){
if(count)
{
jQuery("#processed_poids_div").html("Processed Order ids:"+count) ;
}
}
});
}
Function when i click on start process button
var clear_Process = "";
function updateRecords()
{
clear_Process = setInterval(function(){displayWaitingRecords()},200);
var str = jQuery("#rrq_form :input[value!='']").serialize();
jQuery.ajax({
async: false,
type: 'POST',
data : str,
url: "/updaterecord_status.php",
success: function(valid_result)
{
if(jQuery.trim(valid_result) == 'Success')
{
jQuery("#rrq_load_img").hide();
jQuery("#rrq_orders_status").html("some success message");
}
}
});
}
Where i am doing wrong? Any help would be greatly appreciated.
You have set async: false. So the ajax call will process synchronized. Set it to false or leave it out (because true is default):
var clear_Process = "";
function updateRecords()
{
clear_Process = setInterval(function(){displayWaitingRecords()},200);
var str = jQuery("#rrq_form :input[value!='']").serialize();
jQuery.ajax({
async: true,
type: 'POST',
data : str,
url: "/updaterecord_status.php",
success: function(valid_result)
{
if(jQuery.trim(valid_result) == 'Success')
{
jQuery("#rrq_load_img").hide();
jQuery("#rrq_orders_status").html("some success message");
}
}
});
}
If you leave it out you have the same result:
function displayWaitingRecords()
{
jQuery.ajax({
type: 'GET',
crossDomain:true,
url: "/curlRRQCount.php",
success: function(count){
if(count)
{
jQuery("#processed_poids_div").html("Processed Order ids:"+count) ;
}
}
});
}

Limiting search results Javascript

I was wondering how to limit the search result in the Javascript file, my JS file details as following:
/* JS File */
<script>
// Start Ready
$(document).ready(function() {
// Icon Click Focus
$('div.icon').click(function(){
$('input#search').focus();
});
// Live Search
// On Search Submit and Get Results
function search() {
var query_value = $('input#search').val();
$('b#search-string').html(query_value);
if(query_value !== ''){
$.ajax({
type: "POST",
url: "search.php",
data: { query: query_value },
cache: false,
success: function(html){
$("ul#results").html(html);
}
});
}return false;
}
$("input#search").live("keyup", function(e) {
// Set Timeout
clearTimeout($.data(this, 'timer'));
// Set Search String
var search_string = $(this).val();
// Do Search
if (search_string == '') {
$("ul#results").fadeOut();
$('h4#results-text').fadeOut();
}else{
$("ul#results").fadeIn();
$('h4#results-text').fadeIn();
$(this).data('timer', setTimeout(search, 100));
};
});
});
</script
I just need to add similar to following code to be able to load a loading images before the result and limit the results into five or whatever, and if possible add load more later.
<script>
function loadSearch(query) {
document.body.style.overflow='hidden';
if (typeof xhr != "undefined") {
xhr.abort();
clearTimeout(timeout);
}
if (query.length >= 3) {
timeout = setTimeout(function () {
$('#moreResults').slideDown(300);
$('#search_results').slideDown(500).html('<br /><p align="center"><img src="http://www.tektontools.com/images/loading.gif"></p>');
xhr = $.ajax({
url: 'http://www.tektontools.com/search_results.inc.php?query='+encodeURIComponent(query),
success: function(data) {
$("#search_results").html(data);
}
});
}, 500);
} else {
unloadSearch();
}
}
function unloadSearch() {
document.body.style.overflow='';
$('#search_results').delay(100).slideUp(300);
$('#moreResults').delay(100).slideUp(300);
}
</script>
I have got the 2nd code from another template page, and I am just failing to adjust it to fit my search template (1st code), I'd appreciate it if someone could help me to adjust it, thanks a lot.
If you want to do this on the javascript side, you can use slice.
$.ajax({
type: "POST",
url: "search.php",
data: { query: query_value },
cache: false,
success: function(html){
$("ul#results").html(html.slice(0, 5);
}
});
I would personally suggest that you do the limiting of rows on the server side to minimize the amount of data you transfer between the client and the server.

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