Develop Reference

Validation DropDownList outside grid

I have kendo dropdownlist and button submit. I want if the user not select anything in dropdown(position), there will be validation that inform the user must select one position at least at dropdown. Then, if the user has click the position, so the user can submit the data. I have used some method like "required" but not working.
HTML
<input id="dropdown" style="width:200px;" />
JavaScript for kendoDropDownList (position)
$("#dropdown").kendoDropDownList({
optionLabel: "- Select Position -",
dataTextField: "functionName",
dataValueField: "hrsPositionID",
dataSource: {
transport:{
read: {
url: "./testjson.php",
type: "POST",
data: function() {
return {
method: "getDropdown",
}
}
},
},
},
change: function(e){
console.log(this.value());
// $('#AccountingTree').data('kendoTreeView').homogeneous.read();
homogeneous1.read();
homogeneous2.read();
homogeneous3.read();
homogeneous4.read();
homogeneous5.read();
homogeneous6.read();
homogeneous7.read();
homogeneous8.read();
homogeneous9.read();
homogeneous10.read();
homogeneous11.read();
homogeneous12.read();
homogeneous13.read();
homogeneous14.read();
}
}).data('kendoDropDownList');
dropdownlist = $("#dropdown").data("kendoDropDownList");
For dropdownlist above, i"m using homogeneous data (treeview).
Anyone have any idea or reference on this question?
JavaScript AJAX call for submit button
//AJAX call for button
$("#primaryTextButton").click(function(){
if($("#dropdown").data("kendoDropDownList").value() == ""){
kendo.alert("Please select position.");
}
});
$("#primaryTextButton").kendoButton();
var button = $("#primaryTextButton").data("kendoButton");
button.bind("click", function(e) {
var test = $("#dropdown").val()
$.ajax({
url: "../DesignationProgramTemplate/testjson.php",
type: "POST",
data: {
method: "addTemplate" ,
id: test,
progid: array
},
success: function (response) {
if(response === "SUCCESS")
{
kendo.alert("Data saved");
}else
{
kendo.confirm("Update the data?")
.done(function(){
$.ajax({
type: "POST",
url: "../DesignationProgramTemplate/testjson.php",
data: {
method: "deleteTemplate" ,
id: test,
progid: array
},
success: function(){
kendo.alert("Data updated");
}
});
});
}
},
});
});

When you click the button, just get the value of the kendoDropDownList and do a
conditional statement. Hope this helps. Happy Coding ;D
//AJAX call for button
$("#primaryTextButton").kendoButton();
var button = $("#primaryTextButton").data("kendoButton");
button.bind("click", function(e) {
var test = $("#dropdown").data("kendoDropDownList").value();
if(test == ""){
kendo.alert("Please select position.");
}
else{
$.ajax({
url: "../DesignationProgramTemplate/testjson.php",
type: "POST",
data: {
method: "addTemplate" ,
id: test,
progid: array
},
success: function (response) {
if(response === "SUCCESS"){
kendo.alert("Data saved");
}
else{
kendo.confirm("Update the data?")
.done(function(){
$.ajax({
type: "POST",
url: "../DesignationProgramTemplate/testjson.php",
data: {
method: "deleteTemplate" ,
id: test,
progid: array
},
success: function(){
kendo.alert("Data updated");
}
});
});
}
},
});
}
});

Ajax POST don't work after button click

My problem is lack of action after pressing the button. Under the button hook AJAX function.
Please a hint where I have a bug // errors.
My code:
Controller:
[HttpPost]
public ActionResult InsertCodesToDB(string name)
{
cl.InsertCodesToDB(name);
fl.MoveCodeFileToAccept(name);
string response = "Test";
return Content(response, "application/json");
}
View / Button:
<input type="button" class="btn btn-success sendCodesToDB" value="Umieść kody w bazie" data-value="#item.Name"/>
View / Script:
<script>
$('.sendCodesToDB').on('click', function () {
var name = $(this).data("value");
$.ajax({
url: '/ActualCodes/InsertCodesToDB',
type: 'POST',
dataType: 'json',
cache: false,
data: JSON.stringify({ 'name': 'name' }),
success: function (response) {
#(ViewBag.MessageOK) = response;
},
error: function () {
onBegin;
}
});
});
function onBegin() {
$('#files').hide();
$('#insertFiles').hide();
$('#loading').show();
$('#lblSelectedProductName').text('Trwa umieszczanie kodów w bazie danych. Proszę czekać ...');
$('#ttt').show();
}
</script>
Thank you in advance for your help.

You seem to not be adding the on ready function for jQuery. Try adding it before your click action and closing it before your onBegin() function, like so:
<script>
// open here
$( document ).ready(function() {
$('.sendCodesToDB').on('click', function () {
var name = $(this).data("value");
$.ajax({
url: '/ActualCodes/InsertCodesToDB',
type: 'POST',
dataType: 'json',
cache: false,
data: JSON.stringify({ 'name': 'name' }),
success: function (response) {
#(ViewBag.MessageOK) = response;
},
error: function () {
// function call missing "()"
onBegin();
}
});
});
// and close here
});
function onBegin() {
$('#files').hide();
$('#insertFiles').hide();
$('#loading').show();
$('#lblSelectedProductName').text('Trwa umieszczanie kodów w bazie danych. Proszę czekać ...');
$('#ttt').show();
}
</script>

The code in Ajax must be JavaScript. You cannot use C# code there (except to print some values). What is #(ViewBag.MessageOK) doing here:
success: function (response) {
#(ViewBag.MessageOK) = response;
},
If you want to display the response in a message box, try something like:
success: function (response) {
$("#your_message_id").html(response);
},
Notes: aside from that, you have several errors in your code as others pointed out in the comments.
1- Remove the quotes from the data like this:
data: JSON.stringify({ name: name }),
2- Change the error to this:
error: function () {
onBegin(); // You need "()" here
}
Or better this:
error: onBegin // You don't need "()" here

I guess you are sending data inside the AJAX call in the wrong way.
Try it like this
data: JSON.stringify({ name: name })
Hope this will help you.

stopping a function after first click, to prevent more executions

I have this function
function display() {
$.ajax({
url: "new.php",
type: "POST",
data: {
textval: $("#hil").val(),
},
success: function(data) {
$('.daily').html(data);
}
});
}
and it serves its purpose, the only problem is, a user can click on for as many times as possible, and it will send just as many requests to new.php.
What I want is to restrict this to just 1 click and maybe till the next page refresh or cache clear.

Simple example would be :
<script>
var exec=true;
function display() {
if(exec){
alert("test");
exec=false;
}
}
</script>
<button onclick="javascript:display();">Click</button>
In your case it would be :
var exec=true;
function display() {
if(exec){
$.ajax({
url: "new.php",
type: "POST",
data: {
textval: $("#hil").val(),
},
success: function(data) {
$('.daily').html(data);
exec=false;
}
});
}
}

This should do what you want:
Set a global var, that stores if the function already was called/executed.
onceClicked=false;
function display() {
if(!onceClicked) {
onceClicked=true;
$.ajax({
url: "new.php",
type: "POST",
data: {
textval: $("#hil").val(),
},
success: function(data) {
$('.daily').html(data);
}
});
}
}

During onclick, set a boolean flag to true to indicate that user clicked the link before invoking the display() function. Inside the display() function, check the boolean flag and continue only if it is true. Reset the flag to false after the AJAX completed processing (successful or failed).

You can use Lock variable like below.
var lock = false;
function display() {
if (lock == true) {
return;
}
lock = true;
$.ajax({
url: "new.php",
type: "POST",
data: {
textval: $("#hil").val(),
},
success: function (data) {
$('.daily').html(data);
lock = false;
}
});
}

you can implement this with that way too
$(function() {
$('#link').one('click', function() {
alert('your execution one occured');
$(this).removeAttr('onclick');
$(this).removeAttr('href');
});
});
function display(){
alert('your execution two occured');
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<a href="#" onclick="display();" id='link'>Have you only one chance</a>

Change class and text of button based on post result

I'm trying to change the class and text of the button that was clicked based on the result from an ajax post. The page has many buttons, none have IDs (although I could add them if it's for sure needed). I have the following javascript:
$('.ph-button').click(function () {
var selected = [];
$(this).closest('tr').each(function () {
$(this).find('td').each(function() {
selected.push($(this).html));
})
})
console.log(selected);
$.ajax({
type: "POST",
url: "/ClassSearch/watchClasses",
data: { arrayOfClasses: selected },
traditional: true,
success: function (data) {
//need the if statements here I think
console.log(data);
}
});
});
It works and gives me a 0 or 1 as data. I need to change the class to class='ph-button ph-btn-blue and the text to Watched if data is 0 and change the class to class='ph-button ph-btn-grey and the text to Watch if data is 1.
I tried using $(".ph-button").toggleClass("ph-button ph-btn-blue"); but it changed the class of all the buttons on the page and didn't seem to do it like I need.
I'm guessing toggleClass isn't what I need and i'm not sure how to address the button that was clicked instead of all of them. Here are the two possible buttons:
<td><button class='ph-button ph-btn-blue'>Watched</button></td>
<td><button class='ph-button ph-btn-grey'>Watch</button></td>
SOLUTION:
$('.ph-button').click(function () {
var selected = [];
var btn = $(this);
$(this).closest('tr').each(function () {
$(this).find('td').each(function(){
selected.push($(this).html());
})
})
console.log(selected);
$.ajax({
type: "POST",
url: "/ClassSearch/watchClasses",
data: { arrayOfClasses: selected },
traditional: true,
success: function (data) {
console.log(data);
if (data == 1) {
btn.toggleClass("ph-btn-grey ph-btn-blue").text('Watched');
}
if (data == 0) {
btn.toggleClass("ph-btn-blue ph-btn-grey").text('Watch');
}
}
});
});

set a temporary variable referencing the button, so you can use it later on in your AJAX success callback:
$('.ph-button').click(function () {
var selected = [];
var btn = $(this);
$(this).closest('tr').each(function () {
$(this).find('td').each(function(){
selected.push($(this).html());
})
})
$.ajax({
type: "POST",
url: "/ClassSearch/watchClasses",
data: { arrayOfClasses: selected },
traditional: true,
success: function (data) {
if(data == "0"){
btn.toggleClass("ph-button ph-btn-blue").text('Watched');
}
}
});
});

AJAX reloads the page without inserting into database

I am new to Ajax and confused. The problem is the ajax reloads the page. The function mentioned in the url inserts the data into database. but the page reloads. I guess the URL is not working but i am not sure on this.
Here is my Controller Function
public function insert_student_fee_payment()
{
$std_code=$this->input->post('std_code');
$total_fee=$this->input->post('total_fee');
$payable_fee=$this->input->post('payable_fee');
$date=date('Y m d');
$class_detail=$this->db->select('class.class_year,class.class_semester')
->join('class','class_student.class_id=class.class_id','LEFT')
->where('class_student.student_id',$std_code)
->where('class_student.class_student_status',2)
->limit(1)
->get('class_student')
->result();
if(count($class_detail)>0)
{
foreach($class_detail as $cd)
{
$year=$cd->class_year;
$semester=$cd->class_semester;
}
}
$data=array(
'std_code'=>$std_code,
'year'=>$year,
'semester'=>$semester,
'total_fee'=>$total_fee,
'payable_fee'=>$payable_fee,
'date'=>$date,
'status'=>2
);
if($this->db->insert('student_fees',$data))
{
echo '1';
}
}
and here is my Ajax code in form
<script type="text/javascript">
$(document).ready(function(){
$('#insert_fee_payment').click(function(){
var std_code=$('#std_code').text();
var total_fee=$('#total_fee').text().split(' ');
var payable_fee=$('#payable_fee').text().split(' ');
total_fee=total_fee[0];
payable_fee=payable_fee[0];
var data='std_code='+std_code+'&total_fee='+total_fee+'&payable_fee='+payable_fee;
$.ajax({
url: '<?php echo base_url()."index.php/finance/insert_student_fee_payment;?>',
type: 'POST',
data: data,
success: function(response)
{
alert(response);
},
error: function(response,status,err)
{
alert(err.message);
}
});
});
});
any help guys

We don't see the HTML so it's hard to say what's wrong but my guess is that $('#insert_fee_payment') is a submit button so you have to cancel the action by default which is submitting the form.
$('#insert_fee_payment').click(function(e){
e.preventDefault();
};
or
$('#insert_fee_payment').click(function(){
var std_code=$('#std_code').text();
var total_fee=$('#total_fee').text().split(' ');
var payable_fee=$('#payable_fee').text().split(' ');
total_fee=total_fee[0];
payable_fee=payable_fee[0];
var data='std_code='+std_code+'&total_fee='+total_fee+'&payable_fee='+payable_fee;
$.ajax({
url: '/index.php/finance/insert_student_fee_payment',
type: 'POST',
data: data,
success: function(response)
{
alert(response);
},
error: function(response,status,err)
{
alert(err.message);
}
});
return false;
});

Add return false after the error function.
$(document).ready(function(){
$('#insert_fee_payment').click(function(){
var std_code=$('#std_code').text();
var total_fee=$('#total_fee').text().split(' ');
var payable_fee=$('#payable_fee').text().split(' ');
total_fee=total_fee[0];
payable_fee=payable_fee[0];
var data='std_code='+std_code+'&total_fee='+total_fee+'&payable_fee='+payable_fee;
$.ajax({
url: '/index.php/finance/insert_student_fee_payment',
type: 'POST',
data: data,
success: function(response)
{
alert(response);
},
error: function(response,status,err)
{
alert(err.message);
}
return false;
});
});
});