I have a checkbox on which i am trying to send an ajax request based on its position. It is true by default. I want to be able to click it, and get a dialog that asks me if I want to discard my changes,and this dialog depends on the fact that the checkbox is not yet false.
$("input[type='checkbox']").click(function(evt) {
evt.preventDefault();
alert(this.checked);
if(checkEdited()){
var result = confirm("Do you want to continue?");
}
});
function checkEdited(){
var checkbox = $("div.managerContent input[type='checkbox']");
if(!checkbox.checked){
return false;
}
else{
//check other stuff
}
}
And everytime, I am getting false in the alert. In the browser, when I click the checkbox the check goes away, i get the alert, and then the check comes back.. checkEdited() is also used in other places
Everywhere I look to find how to stop a checkbox change event and assign it a value later just tells me to use .click and e.prenventDeafult()
Any ideas? Thanks so much!
You should attempt to capture the event before the click is complete, you can do this with mousedown like so:
$("input[type='checkbox']").on('mousedown',function(evt) {
evt.preventDefault();
alert(this.checked);
});
Here is a demo with a working example of capturing it before it changes
JSFIDDLE DEMO
We have a select2 dropdown in a row (just a div) and we need to be able to click that entire row to trigger the dropdown. I have no problem showing it, but trying to hide it has become a problem, and I'm wondering if my logic is flawed somewhere. select2 AFAIK doesn't have a toggle method on the version we're on, so I have to manually use it's open and close methods. This is what I tried.
$('[data-variable-type=select]').on('click', function(e){
e.stopPropagation();
var _dropdown = $(this).find('div.interface_dropdown');
if( _dropdown.hasClass('select2-dropdown-open') ) {
$(this).find('select.interface_dropdown').select2('close');
}
else {
$(this).find('select.interface_dropdown').select2('open');
}
});
This causes it to open properly, but when you click to close it, it closes on mousedown but reappears on mouseup.
Is there someway I can get it toggling properly?
Will you post relevant HTML? It's hard to understand what you're doing without seeing content.
$('[data-variable-type=select]').on('click', function(e){
e.stopPropagation();
var _dropdown = $(this).find('div.interface_dropdown');
if( _dropdown.hasClass('select2-dropdown-open') ) {
_dropdown.removeClass('select2-dropdown-open');
_dropdown.select2('close');
} else {
_dropdown.select2('open');
_dropdown.addClass('select2-dropdown-open');
}
});
It looks like you forgot to add/removethat class, maybe this will work better? Again, I'm kind of feeling around in the dark here without seeing your content.
if( _dropdown.hasClass('select2-dropdown-open') ) {
$(this).find('select.interface_dropdown').select2('close');
}
in later versions of select2 (3.3+ iirc) this will never get triggered because when opened select2 creates a transparent mask over the entire browser and listens to click events. when the mask is clicked currently opened select2 is closed. this was the only reliable way to close a select2 when the user is ready to do something else.
The proper way is:
$('select').data('select2').toggleDropdown()
I use the following code to add the selected div value into a input.
var lastFocus;
$('.num-button').click(function(e){
e.preventDefault();
e.stopPropagation();
//addOrRemoveWatermark(lastFocus);
$(lastFocus).val($(lastFocus).val() + $(this).children('span').html());
});
$('.del').click(function(e){
e.preventDefault();
e.stopPropagation();
//addOrRemoveWatermark(lastFocus);
$(lastFocus).val(function(index, text){
return text.replace(/(\s+)?.$/, '');
});
})
below is a sample image if the input panel I have! This is developed for a touch device and hence the key pad.
The script works fine to add value on each button press in the keypad. The problem I'm facing is for the room number I want to run an ajax call after the user has entered the amount. But since the focus is removed every button click, how can I run the script when the focus is changed to another input. I tried the jquery .focusout() method but it gets fired each and every time the user clicks on a number button.
if anyone can suggest me a work around that would be a great help!
thank you!
Perhaps you could delay the request with something like the following:
var roomNoChanged = false;
$('#room-number').change(function() {
roomNoChanged = true;
});
$('#table-number, #no-of-guests').focus(function() {
if(roomNoChanged) {
roomNoChanged = false;
$.post(...)
}
});
I have following jQuery code to prevent double clicking a button. It works fine. I am using Page_ClientValidate() to ensure that the double click is prevented only if the page is valid. [If there are validation errors the flag should not be set as there is no postback to server started]
Is there a better method to prevent the second click on the button before the page loads back?
Can we set the flag isOperationInProgress = yesIndicator only if the page is causing a postback to server? Is there a suitable event for it that will be called before the user can click on the button for the second time?
Note: I am looking for a solution that won't require any new API
Note: This question is not a duplicate. Here I am trying to avoid the use of Page_ClientValidate(). Also I am looking for an event where I can move the code so that I need not use Page_ClientValidate()
Note: No ajax involved in my scenario. The ASP.Net form will be submitted to server synchronously. The button click event in javascript is only for preventing double click. The form submission is synchronous using ASP.Net.
Present Code
$(document).ready(function () {
var noIndicator = 'No';
var yesIndicator = 'Yes';
var isOperationInProgress = 'No';
$('.applicationButton').click(function (e) {
// Prevent button from double click
var isPageValid = Page_ClientValidate();
if (isPageValid) {
if (isOperationInProgress == noIndicator) {
isOperationInProgress = yesIndicator;
} else {
e.preventDefault();
}
}
});
});
References:
Validator causes improper behavior for double click check
Whether to use Page_IsValid or Page_ClientValidate() (for Client Side Events)
Note by #Peter Ivan in the above references:
calling Page_ClientValidate() repeatedly may cause the page to be too obtrusive (multiple alerts etc.).
I found this solution that is simple and worked for me:
<form ...>
<input ...>
<button ... onclick="this.disabled=true;this.value='Submitting...'; this.form.submit();">
</form>
This solution was found in:
Original solution
JS provides an easy solution by using the event properties:
$('selector').click(function(event) {
if(!event.detail || event.detail == 1){//activate on first click only to avoid hiding again on multiple clicks
// code here. // It will execute only once on multiple clicks
}
});
disable the button on click, enable it after the operation completes
$(document).ready(function () {
$("#btn").on("click", function() {
$(this).attr("disabled", "disabled");
doWork(); //this method contains your logic
});
});
function doWork() {
alert("doing work");
//actually this function will do something and when processing is done the button is enabled by removing the 'disabled' attribute
//I use setTimeout so you can see the button can only be clicked once, and can't be clicked again while work is being done
setTimeout('$("#btn").removeAttr("disabled")', 1500);
}
working example
I modified the solution by #Kalyani and so far it's been working beautifully!
$('selector').click(function(event) {
if(!event.detail || event.detail == 1){ return true; }
else { return false; }
});
Disable pointer events in the first line of your callback, and then resume them on the last line.
element.on('click', function() {
element.css('pointer-events', 'none');
//do all of your stuff
element.css('pointer-events', 'auto');
};
After hours of searching i fixed it in this way:
old_timestamp = null;
$('#productivity_table').on('click', function(event) {
// code executed at first load
// not working if you press too many clicks, it waits 1 second
if(old_timestamp == null || old_timestamp + 1000 < event.timeStamp)
{
// write the code / slide / fade / whatever
old_timestamp = event.timeStamp;
}
});
you can use jQuery's [one][1] :
.one( events [, data ], handler ) Returns: jQuery
Description: Attach a handler to an event for the elements. The handler is executed at most once per element per event type.
see examples:
using jQuery: https://codepen.io/loicjaouen/pen/RwweLVx
// add an even listener that will run only once
$("#click_here_button").one("click", once_callback);
using count,
clickcount++;
if (clickcount == 1) {}
After coming back again clickcount set to zero.
May be this will help and give the desired functionality :
$('#disable').on('click', function(){
$('#disable').attr("disabled", true);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button id="disable">Disable Me!</button>
<p>Hello</p>
We can use on and off click for preventing Multiple clicks. i tried it to my application and it's working as expected.
$(document).ready(function () {
$("#disable").on('click', function () {
$(this).off('click');
// enter code here
});
})
This should work for you:
$(document).ready(function () {
$('.applicationButton').click(function (e) {
var btn = $(this),
isPageValid = Page_ClientValidate(); // cache state of page validation
if (!isPageValid) {
// page isn't valid, block form submission
e.preventDefault();
}
// disable the button only if the page is valid.
// when the postback returns, the button will be re-enabled by default
btn.prop('disabled', isPageValid);
return isPageValid;
});
});
Please note that you should also take steps server-side to prevent double-posts as not every visitor to your site will be polite enough to visit it with a browser (let alone a JavaScript-enabled browser).
The absolute best way I've found is to immediately disable the button when clicked:
$('#myButton').click(function() {
$('#myButton').prop('disabled', true);
});
And re-enable it when needed, for example:
validation failed
error while processing the form data by the server, then after an error response using jQuery
Another way to avoid a quick double-click is to use the native JavaScript function ondblclick, but in this case it doesn't work if the submit form works through jQuery.
One way you do this is set a counter and if number exceeds the certain number return false.
easy as this.
var mybutton_counter=0;
$("#mybutton").on('click', function(e){
if (mybutton_counter>0){return false;} //you can set the number to any
//your call
mybutton_counter++; //incremental
});
make sure, if statement is on top of your call.
If you are doing a full round-trip post-back, you can just make the button disappear. If there are validation errors, the button will be visible again upon reload of the page.
First set add a style to your button:
<h:commandButton id="SaveBtn" value="Save"
styleClass="hideOnClick"
actionListener="#{someBean.saveAction()}"/>
Then make it hide when clicked.
$(document).ready(function() {
$(".hideOnClick").click(function(e) {
$(e.toElement).hide();
});
});
Just copy paste this code in your script and edit #button1 with your button id and it will resolve your issue.
<script type="text/javascript">
$(document).ready(function(){
$("#button1").submit(function() {
$(this).submit(function() {
return false;
});
return true;
});
});
</script
Plain JavaScript:
Set an attribute to the element being interacted
Remove the attribute after a timeout
If the element has the attribute, do nothing
const throttleInput = document.querySelector('button');
throttleInput.onclick = function() {
if (!throttleInput.hasAttribute('data-prevent-double-click')) {
throttleInput.setAttribute('data-prevent-double-click', true);
throttleInput.setAttribute('disabled', true);
document.body.append("Foo!");
}
setTimeout(function() {
throttleInput.removeAttribute('disabled');
throttleInput.removeAttribute('data-prevent-double-click');
}, 3000);
}
<button>Click to add "Foo"!</button>
We also set the button to .disabled=true. I added the HTML Command input with type hidden to identify if the transaction has been added by the Computer Server to the Database.
Example HTML and PHP Commands:
<button onclick="myAddFunction(<?php echo $value['patient_id'];?>)" id="addButtonId">ADD</button>
<input type="hidden" id="hasPatientInListParam" value="<?php echo $hasPatientInListParamValue;?>">
Example Javascript Command:
function myAddFunction(patientId) {
document.getElementById("addButtonId").disabled=true;
var hasPatientInList = document.getElementById("hasPatientInListParam").value;
if (hasPatientInList) {
alert("Only one (1) patient in each List.");
return;
}
window.location.href = "webAddress/addTransaction/"+patientId; //reloads page
}
After reloading the page, the computer auto-sets the button to .disabled=false. At present, these actions prevent the multiple clicks problem in our case.
I hope these help you too.
Thank you.
One way I found that works is using bootstrap css to display a modal window with a spinner on it. This way nothing in the background can be clicked. Just need to make sure that you hide the modal window again after your long process completes.
so I found a simple solution, hope this helps.
all I had to do was create a counter = 0, and make the function that runs when clicked only runnable if the counter is = 0, when someone clicks the function the first line in the function sets counter = 1 and this will prevent the user from running the function multiple times when the function is done the last line of the code inside the function sets counter to 0 again
you could use a structure like this, it will execute just once:
document.getElementById('buttonID').addEventListener('click', () => {
...Do things...
},{once:true});
We have a website built in .NET and jQuery. We have custom jQuery to call the load method on a processing ASP.NET page. That ajax call is fired in a click handler, e.g.
$("#Submit").click(function(){
$(a_selector).load("Process.aspx?data=" + someDataObject, null, function(){
alert("Done")});
}
return false;
);
Our issue is when we hit the #Submit button the click is fired which calls the ajax to process it. People seem to be double-clicking the button and therefore we're getting multiple results in our database from the dual clicks. Does anyone have an idea on how to prevent this issue? I considered something like disabling the button via JS but I'd like to know of other ideas.
Use the one function of jQuery. This way, the event is only ever fired once. Of course, you should also disable the button so the user knows that clicking on it is futile. In addition, show a spinner, progress bar, or change the cursor styling to indicate to the user that something is happening and the system isn't stuck.
stop propagation
$("#Submit").click(function(event){
event.stopPropagation();
if (typeof $_submitSend == "undefined")
var $_submitSend = true;
else if ($_submitSend == true)
return false;
$_submitSend = true;
$(this).attr("disabled", "disabled");
$(a_selector).load("Process.aspx?data=" + someDataObject, null, function(){
alert("Done")});
$_submitSend = false;
$(this).removeAttr("disabled");
}
);
$("#Submit").click(function(){
$(a_selector).removeClass("class").load("Process.aspx?data=" + someDataObject, null, function(){
$(this).addClass("class");
alert("Done")});
}
return false;
);
Then just add some specific class without any styling which you will use as a selector. Dont know if it will work the way you want, but it looks like simplest solution to me... :)