onBlur event overriding jQuery UI events - javascript

I have a textbox that is wired up using jQuery UI 1.8.4 autocomplete. I have the select event wired up so when the user chooses an item from the list it calls another JavaScript function that issues an ajax request to save the data and update an XML document.
On the same textbox there is an onBlur event so that if the user manually types the data in and tabs off the textbox without choosing an autocomplete item it also performs the update.
When the user selects an item from the autocomplete list it causes onBlur to fire which overrides the select event, thus the only data that gets updated is whatever is in the textbox that the user typed, and since the select event doesn't fire the contents of the textbox don't get updated.
I've tried using the change event with the same results.
Is there a way to ensure the select event gets fired and also implement some functionality that will emulate an onBlur in the case where a user types the value in rather than selecting it?

The problem is when the user interacts with the autocomplete menu, the textbox loses focus and the blur event fires. There is no way to really detect if the user is in the autocomplete control unless the component tells you that.
If the autocomplete control you are using does not have methods to tell you when it is closed, than you are probably stuck with using a setTimeout to wait a bit before you fire your code.

I think The onselect is always fired
"BUT" its fired only after onblur event of the textbox.
And this happens only when you use the mouse to select the autocomplete item and not through selecting the item by keyboard.
You may undo the update made on onblur with the select event depending on wether mouse click or keyboard select is made.
select: function (event, ui) {
if (event.originalEvent.originalEvent.type == 'click') {
//undo the onblur event happened by an ajax call here
//$("#txtbox").val() will still be available to do an undo
}
//do the actual onselect function here
}

Related

Vue prevent blur event

I have an editable input component, which has an isEditable state.
By clicking outside the input field, I use #blur event.
By clicking on the enter key, I trigger another event.
Both methods use the same logic, and after the logic finishes, I set the isEditable to false. In this case, somehow the blur event is triggered. (I guess because the input field disappears (I guess because it uses v-if="isEditable").
Is there any way to prevent blur to be triggered by changing the state programatically?
If hiding the div activates the blur event, then you can just make the keypress Enter event hide the div, your logic will be executed only once in both cases.
Before :
#blur="myLogic"
#keyup.enter="myLogic"
After :
#blur="myLogic"
#keyup.enter="willActivateBlur"
// methods
willActivateBlur: function() {
this.isEditable = false
}
Edit : Wait, did you say "click on the enter key" ?... I got confused, are you clicking or pressing a key ?
If your problem is using #blur and #click at the same time, a lot of questions were asked about this already, such as this one.

How can I stop an event from propagating in IE11 using JQuery UI autocomplete?

I am using jquery-ui-1.8.21 autocomplete library to create dropdowns for the fields in my form. Autocomplete comes with 2 event handlers, 'select' and 'change'.
When a user selects an item from the dropdown it triggers the 'select' event, populating the field, adding text to a field (lets call it field B), and other things. When a user unfocuses a field, the 'change' event is triggered if the value in the field was changed, adding text to field B.
My problem is that when a user selects an item in a dropdown and then unfocuses, it triggers both the 'select' and 'change' events, adding text to field B twice. I want to only trigger the select event in order to add the text once. For some reason both events only trigger when I click on the dropdown, when I select using the keyboard only 'select' is triggered.
select: function (event, ui) {
console.log("select function")
//other stuff
event.preventDefault();
event.returnValue = false;
}
change: function (event, ui) {
console.log("change function")
//other stuff
}
I have tried event.preventDefault, event.returnValue, both of those in every combination with window.event and event.originalEvent (since JQuery creates its own event), and return false and none of them stop the 'change' event from triggering.
Interestingly for all those events event.cancelable and event.isDefaultPrevented read as true, so it SHOULD be canceling, but it isn't.
How can I get this to work?
This is only an issue in IE11, in Chrome event.preventDefault works fine.

JQuery Click event loads before change event

I am using a simplified example to describe the issue I am facing.
I have the following HTML markup:
<input ng-model="something" style="margin-top:8px;"/>
And, I have two HTML buttons:
<button id='submit'>Save</button>
<button id='btnGetAnalyzerInput'>Generate Analyzer File </button>
I used jQuery's change event on my input (to track whether any changes have been made to the input - by maintaining a simple JS variable).
When the user clicks "Generate Analyzer file button", what I want to is this:
Look up the JS variable to find out whether any changes have been made.
If yes, then prompt the user to save changes (window.dialog)
However, I find that when the focus is still on the input element, and when the button is clicked, the click event runs before the OnChange event. In all other cases, it is the OnChange event which gets fired before the click event (and so my code works as expected).
Is there any way to ensure that for such a scenario, the click event runs after the onChange event?
I am using Google Chrome to test my application.
Note :
Both events work as expected - the OnChange event gets fired when the textbox loses focus.
I can't use the keypress event since I want to track changes.
You could have the click event call the same function as the OnChange event. Something like this:
function OnChange(){
//Do stuff for on change;
}
function ClickEvent(){
OnChange();
//continue with generate stuff
}
You you may need to set up and pass in arguments to the OnChange function, depending on how you are accessing the data you need. If you need more guidance, post more of your code.

jQuery change event is not working as expected

I have added change event on the input field so that whenever user enters the text into it, so other task should happen, it works but when i click outside the input field.I don't know whether it is default behavior or i am doing some thing wrong. I tried using keyup and keydown events and it works as expect.
Please suggest.
Here is my code:
$("#mobile-number").on('change',function(){
// some other code
});
The change event fires when an elements value changes.
For select boxes, checkboxes, and radio buttons, the event is fired immediately when the user makes a selection with the mouse, but for the other element types the event is deferred until the element loses focus.
In other words, on an input, the change event fires when the element loses focus, not when you type, and that is the default behaviour.
That's why there are key events as well, and on modern browsers you can catch most changes to an input with the input event
$("#mobile-number").on('input',function(){ ...
Yes, it is the desired behavior.
Change Event
The change event is fired for , , and
elements when a change to the element's value is committed by the
user. Unlike the input event, the change event is not necessarily
fired for each change to an element's value.
Depending on the kind of form element being changed and the way the
user interacts with the element, the change event fires at a different
moment:
When the element is activated (by clicking or using the keyboard) for and ;
When the user commits the change explicitly (e.g. by selecting a value from a 's dropdown with a mouse click, by selecting a
date from a date picker for , by selecting a file
in the file picker for , etc.);
When the element loses focus after its value was changed, but not commited (e.g. after editing the value of or ).
Try using input event:
$(function() {
$("#mobile-number").on('input', function() {
$("#copy").val(this.value);
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<input type='text' id='mobile-number' />
<input type='text' id='copy' readonly/>
Try this:( If i really understand your problem )
jQuery(document).on('change', '#mobile-number', function() {
// some other code
});
for type event:
jQuery(document).on('keyup', '#mobile-number', function() {
// some other code
});
You should provide your selector to the .on function:
$(document).on('change', '#mobile-number', function() {
// some other code
});

Problems with mouseleave/focusout event handlers and user selecting from autocomplete list

I have bound the jQuery event handler mouseover to an element with the below code:
jQuery(document).ready(function(){
jQuery('#buyout_field').mouseleave(function() {
alert('Hi!');
});
});
This works great, but then I noticed that if the user selects a value from those dropdown auto-complete menus the browser shows you of your past data you have entered that the mouseleave event fires too early for my liking. Yes, it fires at the right time (when their mouse leaves the element); however I need the function to fire only after the user has entered data into the field.
I then added the focusout handler to cover more bases with:
jQuery('#buyout_field').focusout(function() {
alert('Hi!');
});
However it's still possible the user may select a value from the dropdown list AND not click outside the text field.
Do I have any other options here at firing the function or do I have to resort to perhaps using setTimeout() to allow the user time to select something from the autocomplete list and THEN fire the function OR should I just disable autocomplete?
Fiddle: http://jsfiddle.net/wbsDy/

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