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});
link:http://jsfiddle.net/KM9bK/1/
$('.comprejuntoproduto input:checkbox').on('click', function (e) {
if ($('.comprejuntoproduto input:checkbox').is(':checked')) {
$(".comprejuntoproduto").addClass("changeborder");
}else{
$(".comprejuntoproduto").parent().removeClass("changeborder");
}
});
I want when .compreprodutojunto input:checkbox is checked, change the .compreprodutojunto border style.
Thanks so much
First, you need to actually include the jQuery library if you're going to use jQuery (not sure if this was a fiddle-only issue or not). If you didn't include jQuery in your actual page outside of jsFiddle, you'd do it like this:
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.2/jquery.min.js"></script>
(Note, you can download your own copy if you prefer to host it yourself, or call it directly from code.jquery.com)
Also, when you call .removeClass() you can simply call it on the element that you had previously called .addClass() on, in this case <div class="comprejuntoproduto">.
See: http://jsfiddle.net/KM9bK/7/
$('.comprejuntoproduto input:checkbox').on('click', function (e) {
if ($(this).is(':checked')) {
$(".comprejuntoproduto").addClass("changeborder");
} else {
$(".comprejuntoproduto").removeClass("changeborder");
}
});
I know there are more efficient ways at doing this but I have my reasons for doing it this way. I have a modal popup window. I would like for this window to pop up as soon as the visitor loads the page. As of right now the window is reached and opened by clicking a link that takes them to index.php#login_form.
"#login_form" being what I would like to add the URL on page load. Then they can chose to exit it once it has initially loaded with the popup.
Now is there a way to do this more efficiently with out having to change my css or code very much?
Thanks!
The hash in url can be accessed through window.location.hash in javascript. You can judge this in body onload event.
To answer your question I have created a fiddle, that takes your example and solves what you are looking for. http://jsfiddle.net/sgaurav/xA4vG/
Basically what this code is doing is, selects the id of click you want to simulate and then creates a mouse event for click as per answer given here How do I simulate user clicking a link in JQuery?
$.fn.simulateClick = function() {
return this.each(function() {
if('createEvent' in document) {
var doc = this.ownerDocument,
evt = doc.createEvent('MouseEvents');
evt.initMouseEvent('click', true, true, doc.defaultView, 1, 0, 0, 0, 0, false, false, false, false, 0, null);
this.dispatchEvent(evt);
} else {
this.click(); // IE
}
});
}
Now this code is used onload event of body to fake a click on the link that you are doing manually till now using
jQuery(document).load(
jQuery('#join_pop').simulateClick()
);
This in turn loads popup as soon as page opens up. You can change id in last code to the login form if you want and that will start showing up on page load instead of sign up.
One easy way is to load the page directly with the hashtag login_form:
http://www.script-tutorials.com/demos/222/index.html#login_form
Or if you want to be more "precise" you can use jquery like this:
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<body>
<!--Place this at the end of the body tag.-->
<script>
$(function(){
window.location.hash = "login_form"; //this will add with js the #login_form hash at the end of th url
})
</script>
You can use jquery to show the modal when the window is loaded:
Try this code and you'll understand:
$(function(){
alert("Done loading");
})
You'll add the code to show the modal instead of the alert function. If the modal is shown or hidden with css, you can easily add a css class to an element with:
$(".element").addClass("showModal);
Or remove a class with:
$(".element").removeClass("hideModal");
Be sure to have the jquery library imported. I hope this answers your question.
I have a Prototype snippet here that I really want to see converted into Mootools.
document.observe('click', function(e, el) {
if ( ! e.target.descendantOf('calendar')) {
Effect.toggle('calendar', 'appear', {duration: 0.4});
}
});
The snippet catches clicks and if it clicks outside the container $('calendar') should toggle.
Are you trying to catch clicks anywhere in the document? Maybe you could try...
var calendar = $('calendar');
$$('body')[0].addEvent('click', function(e) {
if (!$(e.target).getParent('#calendar')) {
var myFx = new Fx.Tween(calendar, {duration: 400});
myFx.set('display', 'block');
}
}
I'm not sure how you are toggling visibility but the way Fx.Tween.set works allows you to change any CSS property. You may want to look at http://mootools.net/docs/core/Fx/Fx.Tween for other possibilities.
Also, notice that I wrapped e.target using a $. This is specifically for IE. I wrote a post about this here under the sub-heading "Mootools Events Targets".
Lastly, I factored out $('calendar') so that you are not searching the DOM every time.
I have a html page A and a link in the page which opens up page B in a new window. How to reload the page A on clicking and opening this link ?
EDIT:
I should have been more clear. Page B opens in a new window and not as a popup. The hyperlink in question has its target attribute set to _blank. Taking a clue from the answers that I got (Thanks guys !), I tried setting onclick = "window.location.reload()" and it works perfectly fine.
However I have a problem. In fact another question altogether. How to make sure that the reload of page A waits until the page opened in the new window (page B) loads ?
Something like this:
open page b
The simplest way would be to do
link
If I remember correctly that should open the window and then since the return has not been suppresed will reload load the page.
I am not exactly sure if this is what you want based on your wording, but if you want to reload the opening window from a link in the popup try
self.opener.location.href = self.opener.location.href;
Edit, based on your new comments just use the code above in the body onload of the new window
<body onload="self.opener.location.href = self.opener.location.href;">
You can use setTimeout() to delay the reload.
Try this:
<script type="text/javascript">
function openPage(elem) {
function reloadCurrentPage() {
location.reload();
}
var page = window.open(elem.href, '_blank');
page.onload = function() {
reloadCurrentPage();
}
if (/MSIE/.test(navigator.userAgent)) { // fix for IE
var timer = setInterval(function() {
if (page.document.readyState == 'complete') {
clearInterval(timer);
reloadCurrentPage();
}
}, 100);
}
}
</script>
<p>second.html</p>