@aidinabedi/playcanvas

<!doctype html> <html lang="en"> <head> <title>pc.Keyboard | PlayCanvas API Reference</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link rel="icon" type="image/png" href="images/playcanvas-favicon.png"> <link href="styles/styles.css" rel="stylesheet"> <link href="styles/playcanvas-theme.css" rel="stylesheet"> <script src="scripts/interface.js"></script> <script src="scripts/highlight.min.js"></script> <script>hljs.initHighlightingOnLoad();</script> </head> <body> <header> <nav class="header-width"> <a href="/" class="header-title"><img src="images/playcanvas-manual.png"></a> <ul class="header-menu"> <li class="user-manual"><a href="https://developer.playcanvas.com/en/user-manual/">User Manual</a></li> <li class="tutorials"><a href="https://developer.playcanvas.com/en/tutorials">Tutorials</a></li> <li class="forum"><a href="https://forum.playcanvas.com/" target="_blank">Forum</a></li> <li class="api active"><a href="/api/">API Reference</a></li> </ul> </nav> <div class="header-content header-page header-width"> <h1><span class="font-icon"></span>API Reference</h1> <input id="search" class="search" type="text" placeholder="Search"></input> </div> </header> <div class="container content-width"> <nav class="sidebar"> <div class="sidebarFilter"> <input id="filter-input" type="text" placeholder="Filter"> </div> <ul> <li id="nav-pc"><a href="pc.html">pc</a></li> <li id="nav-pc.callbacks"><a href="pc.callbacks.html">pc.callbacks</a></li> <li id="nav-pc.guid"><a href="pc.guid.html">pc.guid</a></li> <li id="nav-pc.math"><a href="pc.math.html">pc.math</a></li> <li id="nav-pc.path"><a href="pc.path.html">pc.path</a></li> <li id="nav-pc.platform"><a href="pc.platform.html">pc.platform</a></li> <li id="nav-pc.script"><a href="pc.script.html">pc.script</a></li> <li id="nav-pc.string"><a href="pc.string.html">pc.string</a></li> <li id="nav-pc.Animation"><a href="pc.Animation.html">Animation</a></li> <li id="nav-pc.AnimationComponent"><a href="pc.AnimationComponent.html">AnimationComponent</a></li> <li id="nav-pc.AnimationComponentSystem"><a href="pc.AnimationComponentSystem.html">AnimationComponentSystem</a></li> <li id="nav-pc.AnimationHandler"><a href="pc.AnimationHandler.html">AnimationHandler</a></li> <li id="nav-pc.AnimCache"><a href="pc.AnimCache.html">AnimCache</a></li> <li id="nav-pc.AnimClip"><a href="pc.AnimClip.html">AnimClip</a></li> <li id="nav-pc.AnimController"><a href="pc.AnimController.html">AnimController</a></li> <li id="nav-pc.AnimCurve"><a href="pc.AnimCurve.html">AnimCurve</a></li> <li id="nav-pc.AnimData"><a href="pc.AnimData.html">AnimData</a></li> <li id="nav-pc.AnimSnapshot"><a href="pc.AnimSnapshot.html">AnimSnapshot</a></li> <li id="nav-pc.AnimTarget"><a href="pc.AnimTarget.html">AnimTarget</a></li> <li id="nav-pc.AnimTrack"><a href="pc.AnimTrack.html">AnimTrack</a></li> <li id="nav-pc.Application"><a href="pc.Application.html">Application</a></li> <li id="nav-pc.Asset"><a href="pc.Asset.html">Asset</a></li> <li id="nav-pc.AssetReference"><a href="pc.AssetReference.html">AssetReference</a></li> <li id="nav-pc.AssetRegistry"><a href="pc.AssetRegistry.html">AssetRegistry</a></li> <li id="nav-pc.AudioHandler"><a href="pc.AudioHandler.html">AudioHandler</a></li> <li id="nav-pc.AudioListenerComponent"><a href="pc.AudioListenerComponent.html">AudioListenerComponent</a></li> <li id="nav-pc.AudioListenerComponentSystem"><a href="pc.AudioListenerComponentSystem.html">AudioListenerComponentSystem</a></li> <li id="nav-pc.BasicMaterial"><a href="pc.BasicMaterial.html">BasicMaterial</a></li> <li id="nav-pc.Batch"><a href="pc.Batch.html">Batch</a></li> <li id="nav-pc.BatchGroup"><a href="pc.BatchGroup.html">BatchGroup</a></li> <li id="nav-pc.BatchManager"><a href="pc.BatchManager.html">BatchManager</a></li> <li id="nav-pc.BoundingBox"><a href="pc.BoundingBox.html">BoundingBox</a></li> <li id="nav-pc.BoundingSphere"><a href="pc.BoundingSphere.html">BoundingSphere</a></li> <li id="nav-pc.ButtonComponent"><a href="pc.ButtonComponent.html">ButtonComponent</a></li> <li id="nav-pc.ButtonComponentSystem"><a href="pc.ButtonComponentSystem.html">ButtonComponentSystem</a></li> <li id="nav-pc.CameraComponent"><a href="pc.CameraComponent.html">CameraComponent</a></li> <li id="nav-pc.CameraComponentSystem"><a href="pc.CameraComponentSystem.html">CameraComponentSystem</a></li> <li id="nav-pc.CollisionComponent"><a href="pc.CollisionComponent.html">CollisionComponent</a></li> <li id="nav-pc.CollisionComponentSystem"><a href="pc.CollisionComponentSystem.html">CollisionComponentSystem</a></li> <li id="nav-pc.Color"><a href="pc.Color.html">Color</a></li> <li id="nav-pc.Component"><a href="pc.Component.html">Component</a></li> <li id="nav-pc.ComponentSystem"><a href="pc.ComponentSystem.html">ComponentSystem</a></li> <li id="nav-pc.ComponentSystemRegistry"><a href="pc.ComponentSystemRegistry.html">ComponentSystemRegistry</a></li> <li id="nav-pc.ContactPoint"><a href="pc.ContactPoint.html">ContactPoint</a></li> <li id="nav-pc.ContactResult"><a href="pc.ContactResult.html">ContactResult</a></li> <li id="nav-pc.ContainerHandler"><a href="pc.ContainerHandler.html">ContainerHandler</a></li> <li id="nav-pc.ContainerResource"><a href="pc.ContainerResource.html">ContainerResource</a></li> <li id="nav-pc.Controller"><a href="pc.Controller.html">Controller</a></li> <li id="nav-pc.CubemapHandler"><a href="pc.CubemapHandler.html">CubemapHandler</a></li> <li id="nav-pc.Curve"><a href="pc.Curve.html">Curve</a></li> <li id="nav-pc.CurveSet"><a href="pc.CurveSet.html">CurveSet</a></li> <li id="nav-pc.ElementComponent"><a href="pc.ElementComponent.html">ElementComponent</a></li> <li id="nav-pc.ElementComponentSystem"><a href="pc.ElementComponentSystem.html">ElementComponentSystem</a></li> <li id="nav-pc.ElementDragHelper"><a href="pc.ElementDragHelper.html">ElementDragHelper</a></li> <li id="nav-pc.ElementInput"><a href="pc.ElementInput.html">ElementInput</a></li> <li id="nav-pc.ElementInputEvent"><a href="pc.ElementInputEvent.html">ElementInputEvent</a></li> <li id="nav-pc.ElementMouseEvent"><a href="pc.ElementMouseEvent.html">ElementMouseEvent</a></li> <li id="nav-pc.ElementTouchEvent"><a href="pc.ElementTouchEvent.html">ElementTouchEvent</a></li> <li id="nav-pc.Entity"><a href="pc.Entity.html">Entity</a></li> <li id="nav-pc.EventHandler"><a href="pc.EventHandler.html">EventHandler</a></li> <li id="nav-pc.Font"><a href="pc.Font.html">Font</a></li> <li id="nav-pc.FontHandler"><a href="pc.FontHandler.html">FontHandler</a></li> <li id="nav-pc.ForwardRenderer"><a href="pc.ForwardRenderer.html">ForwardRenderer</a></li> <li id="nav-pc.Frustum"><a href="pc.Frustum.html">Frustum</a></li> <li id="nav-pc.GamePads"><a href="pc.GamePads.html">GamePads</a></li> <li id="nav-pc.GraphicsDevice"><a href="pc.GraphicsDevice.html">GraphicsDevice</a></li> <li id="nav-pc.GraphNode"><a href="pc.GraphNode.html">GraphNode</a></li> <li id="nav-pc.Http"><a href="pc.Http.html">Http</a></li> <li id="nav-pc.I18n"><a href="pc.I18n.html">I18n</a></li> <li id="nav-pc.IndexBuffer"><a href="pc.IndexBuffer.html">IndexBuffer</a></li> <li id="nav-pc.Keyboard"><a href="pc.Keyboard.html">Keyboard</a></li> <li id="nav-pc.KeyboardEvent"><a href="pc.KeyboardEvent.html">KeyboardEvent</a></li> <li id="nav-pc.Layer"><a href="pc.Layer.html">Layer</a></li> <li id="nav-pc.LayerComposition"><a href="pc.LayerComposition.html">LayerComposition</a></li> <li id="nav-pc.LayoutChildComponent"><a href="pc.LayoutChildComponent.html">LayoutChildComponent</a></li> <li id="nav-pc.LayoutChildComponentSystem"><a href="pc.LayoutChildComponentSystem.html">LayoutChildComponentSystem</a></li> <li id="nav-pc.LayoutGroupComponent"><a href="pc.LayoutGroupComponent.html">LayoutGroupComponent</a></li> <li id="nav-pc.LayoutGroupComponentSystem"><a href="pc.LayoutGroupComponentSystem.html">LayoutGroupComponentSystem</a></li> <li id="nav-pc.LightComponent"><a href="pc.LightComponent.html">LightComponent</a></li> <li id="nav-pc.LightComponentSystem"><a href="pc.LightComponentSystem.html">LightComponentSystem</a></li> <li id="nav-pc.Lightmapper"><a href="pc.Lightmapper.html">Lightmapper</a></li> <li id="nav-pc.Mat3"><a href="pc.Mat3.html">Mat3</a></li> <li id="nav-pc.Mat4"><a href="pc.Mat4.html">Mat4</a></li> <li id="nav-pc.Material"><a href="pc.Material.html">Material</a></li> <li id="nav-pc.MaterialHandler"><a href="pc.MaterialHandler.html">MaterialHandler</a></li> <li id="nav-pc.Mesh"><a href="pc.Mesh.html">Mesh</a></li> <li id="nav-pc.MeshInstance"><a href="pc.MeshInstance.html">MeshInstance</a></li> <li id="nav-pc.Model"><a href="pc.Model.html">Model</a></li> <li id="nav-pc.ModelComponent"><a href="pc.ModelComponent.html">ModelComponent</a></li> <li id="nav-pc.ModelComponentSystem"><a href="pc.ModelComponentSystem.html">ModelComponentSystem</a></li> <li id="nav-pc.ModelHandler"><a href="pc.ModelHandler.html">ModelHandler</a></li> <li id="nav-pc.Morph"><a href="pc.Morph.html">Morph</a></li> <li id="nav-pc.MorphInstance"><a href="pc.MorphInstance.html">MorphInstance</a></li> <li id="nav-pc.MorphTarget"><a href="pc.MorphTarget.html">MorphTarget</a></li> <li id="nav-pc.Mouse"><a href="pc.Mouse.html">Mouse</a></li> <li id="nav-pc.MouseEvent"><a href="pc.MouseEvent.html">MouseEvent</a></li> <li id="nav-pc.Node"><a href="pc.Node.html">Node</a></li> <li id="nav-pc.OrientedBox"><a href="pc.OrientedBox.html">OrientedBox</a></li> <li id="nav-pc.ParticleSystemComponent"><a href="pc.ParticleSystemComponent.html">ParticleSystemComponent</a></li> <li id="nav-pc.ParticleSystemComponentSystem"><a href="pc.ParticleSystemComponentSystem.html">ParticleSystemComponentSystem</a></li> <li id="nav-pc.Picker"><a href="pc.Picker.html">Picker</a></li> <li id="nav-pc.PostEffect"><a href="pc.PostEffect.html">PostEffect</a></li> <li id="nav-pc.PostEffectQueue"><a href="pc.PostEffectQueue.html">PostEffectQueue</a></li> <li id="nav-pc.Quat"><a href="pc.Quat.html">Quat</a></li> <li id="nav-pc.Ray"><a href="pc.Ray.html">Ray</a></li> <li id="nav-pc.RaycastResult"><a href="pc.RaycastResult.html">RaycastResult</a></li> <li id="nav-pc.RenderTarget"><a href="pc.RenderTarget.html">RenderTarget</a></li> <li id="nav-pc.ResourceHandler"><a href="pc.ResourceHandler.html">ResourceHandler</a></li> <li id="nav-pc.ResourceLoader"><a href="pc.ResourceLoader.html">ResourceLoader</a></li> <li id="nav-pc.RigidBodyComponent"><a href="pc.RigidBodyComponent.html">RigidBodyComponent</a></li> <li id="nav-pc.RigidBodyComponentSystem"><a href="pc.RigidBodyComponentSystem.html">RigidBodyComponentSystem</a></li> <li id="nav-pc.Scene"><a href="pc.Scene.html">Scene</a></li> <li id="nav-pc.SceneHandler"><a href="pc.SceneHandler.html">SceneHandler</a></li> <li id="nav-pc.ScopeId"><a href="pc.ScopeId.html">ScopeId</a></li> <li id="nav-pc.ScopeSpace"><a href="pc.ScopeSpace.html">ScopeSpace</a></li> <li id="nav-pc.ScreenComponent"><a href="pc.ScreenComponent.html">ScreenComponent</a></li> <li id="nav-pc.ScreenComponentSystem"><a href="pc.ScreenComponentSystem.html">ScreenComponentSystem</a></li> <li id="nav-pc.ScriptAttributes"><a href="pc.ScriptAttributes.html">ScriptAttributes</a></li> <li id="nav-pc.ScriptComponent"><a href="pc.ScriptComponent.html">ScriptComponent</a></li> <li id="nav-pc.ScriptComponentSystem"><a href="pc.ScriptComponentSystem.html">ScriptComponentSystem</a></li> <li id="nav-pc.ScriptHandler"><a href="pc.ScriptHandler.html">ScriptHandler</a></li> <li id="nav-pc.ScriptRegistry"><a href="pc.ScriptRegistry.html">ScriptRegistry</a></li> <li id="nav-pc.ScriptType"><a href="pc.ScriptType.html">ScriptType</a></li> <li id="nav-pc.ScrollbarComponent"><a href="pc.ScrollbarComponent.html">ScrollbarComponent</a></li> <li id="nav-pc.ScrollbarComponentSystem"><a href="pc.ScrollbarComponentSystem.html">ScrollbarComponentSystem</a></li> <li id="nav-pc.ScrollViewComponent"><a href="pc.ScrollViewComponent.html">ScrollViewComponent</a></li> <li id="nav-pc.ScrollViewComponentSystem"><a href="pc.ScrollViewComponentSystem.html">ScrollViewComponentSystem</a></li> <li id="nav-pc.Shader"><a href="pc.Shader.html">Shader</a></li> <li id="nav-pc.SingleContactResult"><a href="pc.SingleContactResult.html">SingleContactResult</a></li> <li id="nav-pc.Skeleton"><a href="pc.Skeleton.html">Skeleton</a></li> <li id="nav-pc.Skin"><a href="pc.Skin.html">Skin</a></li> <li id="nav-pc.SkinInstance"><a href="pc.SkinInstance.html">SkinInstance</a></li> <li id="nav-pc.Sound"><a href="pc.Sound.html">Sound</a></li> <li id="nav-pc.SoundComponent"><a href="pc.SoundComponent.html">SoundComponent</a></li> <li id="nav-pc.SoundComponentSystem"><a href="pc.SoundComponentSystem.html">SoundComponentSystem</a></li> <li id="nav-pc.SoundInstance"><a href="pc.SoundInstance.html">SoundInstance</a></li> <li id="nav-pc.SoundInstance3d"><a href="pc.SoundInstance3d.html">SoundInstance3d</a></li> <li id="nav-pc.SoundManager"><a href="pc.SoundManager.html">SoundManager</a></li> <li id="nav-pc.SoundSlot"><a href="pc.SoundSlot.html">SoundSlot</a></li> <li id="nav-pc.Sprite"><a href="pc.Sprite.html">Sprite</a></li> <li id="nav-pc.SpriteAnimationClip"><a href="pc.SpriteAnimationClip.html">SpriteAnimationClip</a></li> <li id="nav-pc.SpriteComponent"><a href="pc.SpriteComponent.html">SpriteComponent</a></li> <li id="nav-pc.SpriteComponentSystem"><a href="pc.SpriteComponentSystem.html">SpriteComponentSystem</a></li> <li id="nav-pc.SpriteHandler"><a href="pc.SpriteHandler.html">SpriteHandler</a></li> <li id="nav-pc.StandardMaterial"><a href="pc.StandardMaterial.html">StandardMaterial</a></li> <li id="nav-pc.StencilParameters"><a href="pc.StencilParameters.html">StencilParameters</a></li> <li id="nav-pc.Tags"><a href="pc.Tags.html">Tags</a></li> <li id="nav-pc.Texture"><a href="pc.Texture.html">Texture</a></li> <li id="nav-pc.TextureAtlas"><a href="pc.TextureAtlas.html">TextureAtlas</a></li> <li id="nav-pc.TextureAtlasHandler"><a href="pc.TextureAtlasHandler.html">TextureAtlasHandler</a></li> <li id="nav-pc.TextureHandler"><a href="pc.TextureHandler.html">TextureHandler</a></li> <li id="nav-pc.Touch"><a href="pc.Touch.html">Touch</a></li> <li id="nav-pc.TouchDevice"><a href="pc.TouchDevice.html">TouchDevice</a></li> <li id="nav-pc.TouchEvent"><a href="pc.TouchEvent.html">TouchEvent</a></li> <li id="nav-pc.TransformFeedback"><a href="pc.TransformFeedback.html">TransformFeedback</a></li> <li id="nav-pc.Vec2"><a href="pc.Vec2.html">Vec2</a></li> <li id="nav-pc.Vec3"><a href="pc.Vec3.html">Vec3</a></li> <li id="nav-pc.Vec4"><a href="pc.Vec4.html">Vec4</a></li> <li id="nav-pc.VertexAttributeDescription"><a href="pc.VertexAttributeDescription.html">VertexAttributeDescription</a></li> <li id="nav-pc.VertexAttributeElement"><a href="pc.VertexAttributeElement.html">VertexAttributeElement</a></li> <li id="nav-pc.VertexBuffer"><a href="pc.VertexBuffer.html">VertexBuffer</a></li> <li id="nav-pc.VertexFormat"><a href="pc.VertexFormat.html">VertexFormat</a></li> <li id="nav-pc.VertexIterator"><a href="pc.VertexIterator.html">VertexIterator</a></li> <li id="nav-pc.VertexIteratorAccessor"><a href="pc.VertexIteratorAccessor.html">VertexIteratorAccessor</a></li> <li id="nav-pc.XrInput"><a href="pc.XrInput.html">XrInput</a></li> <li id="nav-pc.XrInputSource"><a href="pc.XrInputSource.html">XrInputSource</a></li> <li id="nav-pc.XrManager"><a href="pc.XrManager.html">XrManager</a></li> </ul> </nav> <div class='sidebarToggle'><span></span>Class List</div> <main class="cls"> <h1>pc.Keyboard</h1> <p class="extends">Extends: <a href="pc.EventHandler.html">pc.EventHandler</a></p> <p><p>A Keyboard device bound to an Element. Allows you to detect the state of the key presses. Note, Keyboard object must be attached to an Element before it can detect any key presses.</p></p> <pre><code class="javascript">var keyboard = new pc.Keyboard(window); // attach keyboard listeners to the window</code></pre>  <h1>Summary</h1>      <h3>Methods</h3> <table class="properties"> <tr> <td><a href="#attach">attach</a></td><td><p>Attach the keyboard event handlers to an Element.</td> </tr> <tr> <td><a href="#detach">detach</a></td><td><p>Detach the keyboard event handlers from the element it is attached to.</td> </tr> <tr> <td><a href="#isPressed">isPressed</a></td><td><p>Return true if the key is currently down.</td> </tr> <tr> <td><a href="#wasPressed">wasPressed</a></td><td><p>Returns true if the key was pressed since the last update.</td> </tr> <tr> <td><a href="#wasReleased">wasReleased</a></td><td><p>Returns true if the key was released since the last update.</td> </tr> </table>  <h3>Events</h3> <table class="properties"> <tr> <td><a href="#event:keydown">keydown</a></td><td><p>Event fired when a key is pressed.</td> </tr> <tr> <td><a href="#event:keyup">keyup</a></td><td><p>Event fired when a key is released.</td> </tr> </table> <h2>Inherited</h2>    <h3>Methods</h3> <table class="properties"> <tr> <td><a href="#fire">fire</a></td><td><p>Fire an event, all additional arguments are passed on to the event listener.</td> </tr> <tr> <td><a href="#hasEvent">hasEvent</a></td><td><p>Test if there are any handlers bound to an event name.</td> </tr> <tr> <td><a href="#off">off</a></td><td><p>Detach an event handler from an event.</td> </tr> <tr> <td><a href="#on">on</a></td><td><p>Attach an event handler to an event.</td> </tr> <tr> <td><a href="#once">once</a></td><td><p>Attach an event handler to an event.</td> </tr> </table>  <h1>Details</h1>    <h2>Constructor</h2>  <div id="Keyboard"> <h3 class="methodname">Keyboard([element], [options]) <a class="font-icon" href="#Keyboard"></a></h3> <p><p>Create a new Keyboard object.</p></p> <pre><code class="javascript">var keyboard = new pc.Keyboard(window); // attach keyboard listeners to the window</code></pre> <h4>Parameters</h4> <table> <tr> <td>element</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/API/Element">Element</a>, <a href="https://developer.mozilla.org/en-US/docs/Web/API/Window">Window</a></td><td><p>Element to attach Keyboard to. Note that elements like <div> can't accept focus by default. To use keyboard events on an element like this it must have a value of 'tabindex' e.g. tabindex="0". For more details: <a href="http://www.w3.org/WAI/GL/WCAG20/WD-WCAG20-TECHS/SCR29.html">http://www.w3.org/WAI/GL/WCAG20/WD-WCAG20-TECHS/SCR29.html</a>.</p></td> </tr> <tr> <td>options</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">object</a></td><td><p>Optional options object.</p></td> </tr> <tr> <td>options.preventDefault</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean">boolean</a></td><td><p>Call preventDefault() in key event handlers. This stops the default action of the event occurring. e.g. Ctrl+T will not open a new browser tab</p></td> </tr> <tr> <td>options.stopPropagation</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean">boolean</a></td><td><p>Call stopPropagation() in key event handlers. This stops the event bubbling up the DOM so no parent handlers will be notified of the event</p></td> </tr> </table> </div>   <h2>Methods</h2> <div id="attach"> <h3 class="methodname">attach(element) <a class="font-icon" href="#attach"></a></h3> <p><p>Attach the keyboard event handlers to an Element.</p></p> <h4>Parameters</h4> <table> <tr> <td>element</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/API/Element">Element</a></td><td><p>The element to listen for keyboard events on.</p></td> </tr> </table> </div> <div id="detach"> <h3 class="methodname">detach() <a class="font-icon" href="#detach"></a></h3> <p><p>Detach the keyboard event handlers from the element it is attached to.</p></p> </div> <div id="isPressed"> <h3 class="methodname">isPressed(key) <a class="font-icon" href="#isPressed"></a></h3> <p><p>Return true if the key is currently down.</p></p> <h4>Parameters</h4> <table> <tr> <td>key</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number">number</a></td><td><p>The keyCode of the key to test. See the pc.KEY_* constants.</p></td> </tr> </table> <h4>Returns</h4> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean">boolean</a> <p>True if the key was pressed, false if not.</p> </div> <div id="wasPressed"> <h3 class="methodname">wasPressed(key) <a class="font-icon" href="#wasPressed"></a></h3> <p><p>Returns true if the key was pressed since the last update.</p></p> <h4>Parameters</h4> <table> <tr> <td>key</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number">number</a></td><td><p>The keyCode of the key to test. See the pc.KEY_* constants.</p></td> </tr> </table> <h4>Returns</h4> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean">boolean</a> <p>True if the key was pressed.</p> </div> <div id="wasReleased"> <h3 class="methodname">wasReleased(key) <a class="font-icon" href="#wasReleased"></a></h3> <p><p>Returns true if the key was released since the last update.</p></p> <h4>Parameters</h4> <table> <tr> <td>key</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number">number</a></td><td><p>The keyCode of the key to test. See the pc.KEY_* constants.</p></td> </tr> </table> <h4>Returns</h4> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean">boolean</a> <p>True if the key was pressed.</p> </div>  <h2>Events</h2> <div id="event:keydown"> <h3 class="methodname">keydown <a class="font-icon" href="#event:keydown"></a></h3> <p><p>Event fired when a key is pressed.</p></p> <pre><code class="javascript">var onKeyDown = function (e) { if (e.key === pc.KEY_SPACE) { // space key pressed } e.event.preventDefault(); // Use original browser event to prevent browser action. }; app.keyboard.on("keydown", onKeyDown, this);</code></pre> <h4>Parameters</h4> <table> <tr> <td>event</td><td><a href="pc.KeyboardEvent.html">pc.KeyboardEvent</a></td><td><p>The Keyboard event object. Note, this event is only valid for the current callback.</p></td> </tr> </table> </div> <div id="event:keyup"> <h3 class="methodname">keyup <a class="font-icon" href="#event:keyup"></a></h3> <p><p>Event fired when a key is released.</p></p> <pre><code class="javascript">var onKeyUp = function (e) { if (e.key === pc.KEY_SPACE) { // space key released } e.event.preventDefault(); // Use original browser event to prevent browser action. }; app.keyboard.on("keyup", onKeyUp, this);</code></pre> <h4>Parameters</h4> <table> <tr> <td>event</td><td><a href="pc.KeyboardEvent.html">pc.KeyboardEvent</a></td><td><p>The Keyboard event object. Note, this event is only valid for the current callback.</p></td> </tr> </table> </div> <h2>Inherited</h2>   <h2>Methods</h2> <div id="fire"> <h3 class="methodname">fire(name, [arg1], [arg2], [arg3], [arg4], [arg5], [arg6], [arg7], [arg8]) <a class="font-icon" href="#fire"></a></h3> <p><p>Fire an event, all additional arguments are passed on to the event listener.</p></p> <pre><code class="javascript">obj.fire('test', 'This is the message');</code></pre> <h4>Parameters</h4> <table> <tr> <td>name</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">object</a></td><td><p>Name of event to fire.</p></td> </tr> <tr> <td>arg1</td><td><a href="#">*</a></td><td><p>First argument that is passed to the event handler.</p></td> </tr> <tr> <td>arg2</td><td><a href="#">*</a></td><td><p>Second argument that is passed to the event handler.</p></td> </tr> <tr> <td>arg3</td><td><a href="#">*</a></td><td><p>Third argument that is passed to the event handler.</p></td> </tr> <tr> <td>arg4</td><td><a href="#">*</a></td><td><p>Fourth argument that is passed to the event handler.</p></td> </tr> <tr> <td>arg5</td><td><a href="#">*</a></td><td><p>Fifth argument that is passed to the event handler.</p></td> </tr> <tr> <td>arg6</td><td><a href="#">*</a></td><td><p>Sixth argument that is passed to the event handler.</p></td> </tr> <tr> <td>arg7</td><td><a href="#">*</a></td><td><p>Seventh argument that is passed to the event handler.</p></td> </tr> <tr> <td>arg8</td><td><a href="#">*</a></td><td><p>Eighth argument that is passed to the event handler.</p></td> </tr> </table> <h4>Returns</h4> <a href="pc.EventHandler.html">pc.EventHandler</a> <p>Self for chaining.</p> </div> <div id="hasEvent"> <h3 class="methodname">hasEvent(name) <a class="font-icon" href="#hasEvent"></a></h3> <p><p>Test if there are any handlers bound to an event name.</p></p> <pre><code class="javascript">obj.on('test', function () { }); // bind an event to 'test' obj.hasEvent('test'); // returns true obj.hasEvent('hello'); // returns false</code></pre> <h4>Parameters</h4> <table> <tr> <td>name</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>The name of the event to test.</p></td> </tr> </table> <h4>Returns</h4> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean">boolean</a> <p>True if the object has handlers bound to the specified event name.</p> </div> <div id="off"> <h3 class="methodname">off([name], [callback], [scope]) <a class="font-icon" href="#off"></a></h3> <p><p>Detach an event handler from an event. If callback is not provided then all callbacks are unbound from the event, if scope is not provided then all events with the callback will be unbound.</p></p> <pre><code class="javascript">var handler = function () { }; obj.on('test', handler); obj.off(); // Removes all events obj.off('test'); // Removes all events called 'test' obj.off('test', handler); // Removes all handler functions, called 'test' obj.off('test', handler, this); // Removes all hander functions, called 'test' with scope this</code></pre> <h4>Parameters</h4> <table> <tr> <td>name</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>Name of the event to unbind.</p></td> </tr> <tr> <td>callback</td><td><a href="pc.callbacks.html#HandleEvent">pc.callbacks.HandleEvent</a></td><td><p>Function to be unbound.</p></td> </tr> <tr> <td>scope</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">object</a></td><td><p>Scope that was used as the this when the event is fired.</p></td> </tr> </table> <h4>Returns</h4> <a href="pc.EventHandler.html">pc.EventHandler</a> <p>Self for chaining.</p> </div> <div id="on"> <h3 class="methodname">on(name, callback, [scope]) <a class="font-icon" href="#on"></a></h3> <p><p>Attach an event handler to an event.</p></p> <pre><code class="javascript">obj.on('test', function (a, b) { console.log(a + b); }); obj.fire('test', 1, 2); // prints 3 to the console</code></pre> <h4>Parameters</h4> <table> <tr> <td>name</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>Name of the event to bind the callback to.</p></td> </tr> <tr> <td>callback</td><td><a href="pc.callbacks.html#HandleEvent">pc.callbacks.HandleEvent</a></td><td><p>Function that is called when event is fired. Note the callback is limited to 8 arguments.</p></td> </tr> <tr> <td>scope</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">object</a></td><td><p>Object to use as 'this' when the event is fired, defaults to current this.</p></td> </tr> </table> <h4>Returns</h4> <a href="pc.EventHandler.html">pc.EventHandler</a> <p>Self for chaining.</p> </div> <div id="once"> <h3 class="methodname">once(name, callback, [scope]) <a class="font-icon" href="#once"></a></h3> <p><p>Attach an event handler to an event. This handler will be removed after being fired once.</p></p> <pre><code class="javascript">obj.once('test', function (a, b) { console.log(a + b); }); obj.fire('test', 1, 2); // prints 3 to the console obj.fire('test', 1, 2); // not going to get handled</code></pre> <h4>Parameters</h4> <table> <tr> <td>name</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>Name of the event to bind the callback to.</p></td> </tr> <tr> <td>callback</td><td><a href="pc.callbacks.html#HandleEvent">pc.callbacks.HandleEvent</a></td><td><p>Function that is called when event is fired. Note the callback is limited to 8 arguments.</p></td> </tr> <tr> <td>scope</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">object</a></td><td><p>Object to use as 'this' when the event is fired, defaults to current this.</p></td> </tr> </table> <h4>Returns</h4> <a href="pc.EventHandler.html">pc.EventHandler</a> <p>Self for chaining.</p> </div>  </main> </div> </body> </html>