remove event listener function

");}, function BGON (eve:TweenEvent):void { bgShowing = this["BG"+character]; bgShowing.x = 0; bgShowing.y = 0; fadeInTween = new Tween(bgShowing,"alpha",Strong.easeIn,bgShowing.alpha,1,2,true); fadeInTween.addEventListener(TweenEvent.MOTION_FINISH, resetKeyListener);}, function resetKeyListener (evt:TweenEvent):void { stage.addEventListener (KeyboardEvent.KEY_DOWN, KeyDownHandler);}. "); } else { gotoAndStop (currentFrame); trace ("Key pressed "+character+". For example, the "click" event belongs to the MouseEvent object. Remove the event listener by clicking on the button and again If you want to disable activating new tweens after one set has been initiated, either remove the event listener as soon as key1/key2 is detected and don't restore it until after the tween in BG1ON/BG2ON has finished (you'll need listeners for the fade in tweens), or incorporate another condition into your key testing lines that checks a â¦ The event object contains the context necessary for .unbind() to know which handler to remove. Since the goal of using an anonymous function is presumably not to create a new variable, you could instead store the reference in the element itself: element. This example is also an illustration of a closure. stage.addEventListener(Event.ENTER_FRAME,EntFrame); puzzle1.addEventListener(MouseEvent.MOUSE_DOWN, fl_ClickToDrag_5); function fl_ClickToDrag_5(event:MouseEvent):void. With the code mentioned below i. t works fine sometimes if I am not pressing any other key while it is performing one action but sometimes it behaves weird also. if i put the same code it will become duplicate . "); } else { gotoAndStop (currentFrame); trace ("Key pressed "+character+". To remove an event listener, you use the .off() method and pass in the event type to off. Instead, add listeners and events to your EventServiceProvider and use the event:generate command. I would be glad if you can give me some hints or a start with one more thing I am trying to do. When a user clicks a button or presses a key, an event is fired. I would really appriciate if you please tell me how to store varriables for current background and next backgroud and how to use it in functions. how would the animate program know which of the two functions to call? The remove() function cannot be called at the same time that the target event is being run. A Boolean value that specifies whether the event should be executed in the â¦ The problem might be with the array but the trace in the for â¦ "); gotoAndStop (currentFrame); trace ("Key pressed "+character+". AS3 add/remove Event Listeners within functions... Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. I will try to do it after that and will get back to you. Syntax: element.removeEventListener(event, function, â¦ It accepts all of the same arguments as â¦ For example in an airport when the runway is clear for a plane to take off, a signal is communicateâ¦ By default it is Boolean value false which specifies the removal of event handler from the bubbling phase and if it is true than the removeEventListener() method removes the event handler from the capturing â¦ The JavaScript removeEventListener() method is used to remove an event listener from an element that has been previously attached with the addEventListener() method. I don't see how any sort of loop will solve anything. You can store whichever one that currently is in a variable and use that variable for your tweening. puzzle8.addEventListener(MouseEvent.MOUSE_DOWN, fl_ClickToDrag_17); function fl_ClickToDrag_17(event:MouseEvent):void. I am not sure whether I did it correctly or not but it is cutting the animation in between. now at the frame 2 i use the same event listener but when export pdf it say duplicate. Dear mekefish, thank you for your information. *;import fl.transitions.TweenEvent; stage.addEventListener (KeyboardEvent.KEY_DOWN, KeyDownHandler); var fadeOutTween:Tween;var fadeInTween:Tween; function KeyDownHandler (keyEvent:KeyboardEvent):void { character = String.fromCharCode(keyEvent.charCode); if ((character == "1" && bgShowing != BG1) || (character == "2" && bgShowing != BG2)){ stage.removeEventListener (KeyboardEvent.KEY_DOWN, KeyDownHandler); fadeOutTween = new Tween(bgShowing,"alpha",Strong.easeOut,bgShowing.alpha,0,2,true); fadeOutTween.addEventListener (TweenEvent.MOTION_FINISH, BGON); } else { gotoAndStop (currentFrame); } trace ("Key pressed "+character+". Generating Events & Listeners. We attach an event handler to a marker that zooms the map when clicked. What my goal for this project is, If background 1 is already visible, I don't want key 1 to take any action. stage.addEventListener(MouseEvent.MOUSE_UP, fl_ReleaseToDrop_6); function fl_ReleaseToDrop_6(event:MouseEvent):void, if (target2_mc.hitTestObject(puzzle2.tar2_mc)). How to remove all event listeners from a DOM element in Javascript. if that's before changing frame, add it to the code that changes the frame. After pulling my little remaining hair out all day, I stumbled upon this Stack Overflow Answer. Note: To remove event handlers, the function specified with the addEventListener () method must be an external function, like in the example above (myFunction). The removeEventListener() method is used to remove an event handler associated with the addEventListener() method. Thank you Mr. Murphy for your response. Since the handler refers to the timesClicked variable, which is defined outside the function, incrementing the variable has an effect even between invocations of the handler. function BG1ON(eve:TweenEvent):void{ BG1.x = 0; BG1.y = 0; addChild (BG1); var BG1offTween:Tween = new Tween(BG1,"alpha",Strong.easeIn,0,1,2,true); BG1offTween.addEventListener(TweenEvent.MOTION_FINISH, resetKeyListener);}, function resetKeyListener(evt:TweenEvent):void {. This has implications for thread safety, and also means an event cannot be removed from inside the listener function for itself. The removeEventListener call must reference the exact same function in the removeEventListener call to remove the listener correctly. Doing that will cause something that might not be visible to suddenly become visible just so that it can fade out, which would be unnecessary. When i play the swf , the error #1009 occur. stage.removeEventListener (KeyboardEvent.KEY_DOWN, KeyDownHandler); /t5/animate/as3-add-remove-event-listeners-within-functions/m-p/3337772#M88337, /t5/animate/as3-add-remove-event-listeners-within-functions/m-p/3337773#M88338, /t5/animate/as3-add-remove-event-listeners-within-functions/m-p/3337774#M88339, /t5/animate/as3-add-remove-event-listeners-within-functions/m-p/3337775#M88340, /t5/animate/as3-add-remove-event-listeners-within-functions/m-p/3337776#M88341, /t5/animate/as3-add-remove-event-listeners-within-functions/m-p/3337777#M88342, /t5/animate/as3-add-remove-event-listeners-within-functions/m-p/3337778#M88343, /t5/animate/as3-add-remove-event-listeners-within-functions/m-p/3337779#M88344, /t5/animate/as3-add-remove-event-listeners-within-functions/m-p/3337780#M88345, /t5/animate/as3-add-remove-event-listeners-within-functions/m-p/3337781#M88346, /t5/animate/as3-add-remove-event-listeners-within-functions/m-p/3337782#M88347, /t5/animate/as3-add-remove-event-listeners-within-functions/m-p/3337783#M88348, /t5/animate/as3-add-remove-event-listeners-within-functions/m-p/3337784#M88349. Returns a boolean value indicating if the given listener was successfully removed. stage.addEventListener(MouseEvent.MOUSE_UP, fl_ReleaseToDrop_17); function fl_ReleaseToDrop_17(event:MouseEvent):void, if (target8_mc.hitTestObject(puzzle8.tar8_mc)). How to Add and Remove an event listener, using an imported function, passing arguments in a way that works. Can you explain what the goal of your design is? stage.addEventListener(MouseEvent.MOUSE_UP, fl_ReleaseToDrop_8); function fl_ReleaseToDrop_8(event:MouseEvent):void, if (target4_mc.hitTestObject(puzzle4.tar4_mc)). if (keyEvent.keyCode == key1) { var BG1TweenOff:Tween = new Tween(BG1,"alpha",Strong.easeOut,1,0,2,true); var BG2TweenOff:Tween = new Tween(BG2,"alpha",Strong.easeIn,1,0,2,true); BG1TweenOff.addEventListener (TweenEvent.MOTION_FINISH, BG1ON); stage.removeEventListener (KeyboardEvent.KEY_DOWN, KeyDownHandler); trace ("Key pressed "+character+". In case background 1 is visible and I type "2 IN", background 1 fade out and background 2 fade in. It is possible you have some issues with the various tweens you create, though they should not be competing with one another since they should be acting sequencially. I recently ran into a problem involving the removeEventListener() method, which caused me a good half an hour of confusion before a lightbulb appeared above my head and I was â¦ With the code mentioned below it works fine sometimes if I am not pressing any other key while it is performing one action but sometimes it behaves weird also. Just declare var BG1TweenOff:Tween outsite the function and then set it equal to a new tween when you want it to play. But if background 1 is visible and key 2 or 3 is pressed than I want current background(in this case background 1) to Fade Out and next backgrond(whatever key is pressed key 2 or key 3) to Fade in and same action with the other keys. Your keys probably stop responding because motion finished isn't being called. stage.addEventListener(MouseEvent.MOUSE_UP, fl_ReleaseToDrop_16); function fl_ReleaseToDrop_16(event:MouseEvent):void, if (target7_mc.hitTestObject(puzzle7.tar7_mc)). Do I need to add any loop statement to make it loopable? You can work around this by inserting the following code at the beginning of your scripts, allowing the use of addEventListener() and removeEventListener() in implementations that do not natively support it. First the basics. Show the code as you have it now. Same with other keys. var BG1TweenOff:Tween = new Tween(BG1,"alpha",Strong.easeOut,1,0,2,true); var BG1offTween:Tween = new Tween(BG1,"alpha",Strong.easeOut,1,0,2,true); /t5/animate/as3-add-remove-event-listeners-within-functions/td-p/3337770, /t5/animate/as3-add-remove-event-listeners-within-functions/m-p/3337771#M88336. In short - when using a function in this way (especially for imported functions like this), you need to create a reference â¦ function KeyDownHandler (keyEvent:KeyboardEvent):void. Instructions: Click on the circle to see an alert triggered from the onclick event binding. Multiple events can be removed by using a space separator or namespacing, just as with jQuery().off(). now at the frame 2 i use the same event listener but when export pdf it say duplicate. A handler can also be removed by specifying the function name in the handler argument. If you attached a named function to the event, then you can isolate the event tear down to just that named function by passing it as the second argument. If you want to disable the keyboard while tweening is occuring you need to include the tween in duration as well, but you didn't add an event listener for the tween in. What I am trying to do is, if a user presses keyboard (key – 1), picture 1 should FadeIn and if a user presses keyboard (key – 2) picture one should FadeOut and picture 2 FadeIn and vice-versa. To remove all delegated events from an element without removing non-delegated events, use the special value "**". puzzle6.addEventListener(MouseEvent.MOUSE_DOWN, fl_ClickToDrag_15); function fl_ClickToDrag_15(event:MouseEvent):void. To remove an event listener with Konva, we can use the off() method of a shape object which requires an event type such as click or mousedown. puzzle4.addEventListener(MouseEvent.MOUSE_DOWN, fl_ClickToDrag_8); function fl_ClickToDrag_8(event:MouseEvent):void. stage.addEventListener(Event.ENTER_FRAME,EntFrame_2); Thank you veryy muchh . If not given, all events which match the event name / namespace given in the first â¦ Today, letâs look at the vanilla JS version of off(), which removes an event listener. Example: Map and Marker Events. But, because bind() returns a new function, you will need to keep track of that function if you want to remove it later. addEventListener() and removeEventListener() are not present in older browsers. "); BG1.x = 0; BG1.y = 0; addChild (BG1); var BG1offTween:Tween = new Tween(BG1,"alpha",Strong.easeIn,0,1,2,true); { BG2.x = 0; BG2.y = 0; addChild (BG2); var BG2offTween:Tween = new Tween(BG2,"alpha",Strong.easeIn,0,1,2,true); Here is a revised version of the code but it only deals with keys 1 and 2. stage.addEventListener(MouseEvent.MOUSE_UP, fl_ReleaseToDrop_7); function fl_ReleaseToDrop_7(event:MouseEvent):void, if (target3_mc.hitTestObject(puzzle3.tar3_mc)). The following example would clear all the click event handlers from #myelement and assign a new one: Following is the code for removeEventListener() method â Example. stage.addEventListener(MouseEvent.MOUSE_UP, fl_ReleaseToDrop_5); function fl_ReleaseToDrop_5(event:MouseEvent):void, if (target1_mc.hitTestObject(puzzle1.tar1_mc)). The list of events to be run are present inside of a mutable collection that canât be changed â¦ See it in action in the â¦ AS3 is really wonky about tweens and garbage collection, if you keep declaring more tweens some tend to fail. Live Demo Also, check out TweenLite: http://www.greensock.com/tweenlite/. What I want AS3 to do is not to take any action or in other words it should not listen to keyboard until it finishes the opening or closing animation of a picture or any other object assigned to the key. the first error is occurring because frame 131, line 84 is referencing a non-existent object. It's much better at tweening than the built in As3 functions. I would really appriciate if you kindly eleborate the second suggestion a bit more. stage.addEventListener (KeyboardEvent.KEY_DOWN, KeyDownHandler);/**/. ... To remove a specific event listener, â¦ Every object in amCharts 4 has a property eventswhich is an "event dispatcher". Inline eâ¦ It should not take any action on typing "1 IN" if it is already visible. im making this app, and i have it connect to the twitter api, but then say the facbook button or any of them is pressd the tweets are still displayed. If you want to disable activating new tweens after one set has been initiated, either remove the event listener as soon as key1/key2 is detected and don't restore it until after the tween in BG1ON/BG2ON has finished (you'll need listeners for the fade in tweens), or incorporate another condition into your key testing lines that checks a new variable that you toggle false during the tweening... resetting it to true just as you would re-add the event listener. Event name to remove. Copyright © 2020 Adobe. if (keyEvent.keyCode == key1) { stage.removeEventListener (KeyboardEvent.KEY_DOWN, KeyDownHandler); var BG1TweenOff:Tween = new Tween(BG1,"alpha",Strong.easeOut,1,0,2,true); var BG2TweenOff:Tween = new Tween(BG2,"alpha",Strong.easeIn,1,0,2,true); BG1TweenOff.addEventListener(TweenEvent.MOTION_FINISH, BG1ON); trace ("Key pressed "+character+". Setup is done inside componentDidMount and cleanup would be done â¦ The following code mixes user events with state change events. I am new to AS3. The off () method is most often used to remove event handlers attached with the on () method. Removing anonymous event listeners Warning This article was written over six months ago, and may contain outdated information. When jQuery attaches an event handler, it assigns a unique id to the handler function. Another thing that you should do is to not have your alpha tweens working from 1 to 0 or 0 to 1 (most often applies for any tweens). movieClip_4.addEventListener(MouseEvent.CLICK, fl_ClickToGoToAndStopAtFrame_2); function fl_ClickToGoToAndStopAtFrame_2(event:MouseEvent):void. All rights reserved. import fl.transitions.Tween;import fl.transitions.easing. I did it earlier for mouse event but not understanding how to do it with keyboard event.