events – Page 47 – Tarik Billa

How to capture the “virtual keyboard show/hide” event in Android?

October 6, 2022 by Tarik

2020 Update This is now possible: On Android 11, you can do view.setWindowInsetsAnimationCallback(object : WindowInsetsAnimation.Callback { override fun onEnd(animation: WindowInsetsAnimation) { super.onEnd(animation) val showingKeyboard = view.rootWindowInsets.isVisible(WindowInsets.Type.ime()) // now use the boolean for something } }) You can also listen to the animation of showing/hiding the keyboard and do a corresponding transition. I recommend reading Android … Read more

Calling a function when ng-repeat has finished

October 6, 2022 by Tarik

var module = angular.module(‘testApp’, []) .directive(‘onFinishRender’, function ($timeout) { return { restrict: ‘A’, link: function (scope, element, attr) { if (scope.$last === true) { $timeout(function () { scope.$emit(attr.onFinishRender); }); } } } }); Notice that I didn’t use .ready() but rather wrapped it in a $timeout. $timeout makes sure it’s executed when the ng-repeated elements … Read more

Getting value of HTML Checkbox from onclick/onchange events

October 5, 2022 by Tarik

The short answer: Use the click event, which won’t fire until after the value has been updated, and fires when you want it to: <label><input type=”checkbox” onclick=’handleClick(this);’>Checkbox</label> function handleClick(cb) { display(“Clicked, new value = ” + cb.checked); } Live example | Source The longer answer: The change event handler isn’t called until the checked state … Read more

How to remove a lambda event handler [duplicate]

October 5, 2022 by Tarik

The C# specification explicitly states (IIRC) that if you have two anonymous functions (anonymous methods or lambda expressions) it may or may not create equal delegates from that code. (Two delegates are equal if they have equal targets and refer to the same methods.) To be sure, you’d need to remember the delegate instance you … Read more

jQuery select change event get selected option

October 4, 2022 by Tarik

$(‘select’).on(‘change’, function (e) { var optionSelected = $(“option:selected”, this); var valueSelected = this.value; …. });

How to have click event ONLY fire on parent DIV, not children?

October 4, 2022 by Tarik

If the e.target is the same element as this, you’ve not clicked on a descendant. $(‘.foobar’).on(‘click’, function(e) { if (e.target !== this) return; alert( ‘clicked the foobar’ ); }); .foobar { padding: 20px; background: yellow; } span { background: blue; color: white; padding: 8px; } <script src=”https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js”></script> <div class=”foobar”> .foobar (alert) <span>child (no alert)</span> </div>

Definitive way to trigger keypress events with jQuery

October 3, 2022 by Tarik

If you want to trigger the keypress or keydown event then all you have to do is: var e = jQuery.Event(“keydown”); e.which = 50; // # Some key code value $(“input”).trigger(e);

How can I capture the right-click event in JavaScript? [duplicate]

October 2, 2022 by Tarik

Use the oncontextmenu event. Here’s an example: <div oncontextmenu=”javascript:alert(‘success!’);return false;”> Lorem Ipsum </div> And using event listeners (credit to rampion from a comment in 2011): el.addEventListener(‘contextmenu’, function(ev) { ev.preventDefault(); alert(‘success!’); return false; }, false); Don’t forget to return false, otherwise the standard context menu will still pop up. If you are going to use a … Read more

How to add a touch event to a UIView?

October 1, 2022 by Tarik

In iOS 3.2 and higher, you can use gesture recognizers. For example, this is how you would handle a tap event: //The setup code (in viewDidLoad in your view controller) UITapGestureRecognizer *singleFingerTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)]; [self.view addGestureRecognizer:singleFingerTap]; //The event handling method – (void)handleSingleTap:(UITapGestureRecognizer *)recognizer { CGPoint location = [recognizer locationInView:[recognizer.view superview]]; //Do stuff … Read more