oncanplaythroughイベント

　oncanplaythroughは、<audio>または<video>メディアのバッファリングを停止することなく再生できると推定できたら発生するEventインターフェイスのイベントです。

　<audio>,<video>によるロードプロセスをフォローするイベントには以下があります。

イベントタイプ名	条件
oncanplay	<audio>または<video>メディアの再生が可能になったら
oncanplaythrough	バッファリングを停止することなく再生できる
ondurationchange	メディアの再生時間が変更されたら
onloadedmetadata	メディアのmetaデータが読み込まれたら
onloadeddata	次のフレームが再生できなければ
onloadstart	メディアデータのダウンロードプロセスが始まったら
onpause	メディアの再生を一時停止
onplay	再生される、または一時停止から再開すると
onplaying	一時停止または停止した後に再生を再開すると
onprogress	メディアのダウンロード中に
onratechange	再生速度が変更されたら
onseeked	再生位置を変更するまたはスキップし再生が始まったら
onseeking	再生位置を変更またはスキップ操作直後

構文（Syntax）

in HTML

<tagelement oncanplaythrough="oneFunction()">

in JavaScript

object.oncanplaythrough = function(){ };

object.addEventListener("canplaythrough", script_);

備考（Remarks）

Bubbles	No
Cancelable	No
Interface	Event
Supported HTML Elements	<audio>,<video>

ABC順INDEX

A

Interface: Attr; AnimationEvent
Event: abort; afterprint　未対応ブラウザあり ( Window ); animationend; animationiteration; animationstart
Parameter: activeElement ( DocumentOrShadowRoot ); altKey ( MouseEvent,KeyboardEvent ); animationName ( AnimationEvent ); assignedSlot ( Slotable ); attributes ( Element )
Method: addEventListener() ( EventTarget ); animate() ( Element ); appendChild() ( Node ); attachShadow() ( Element ); atob() ( WindowOrWorkerGlobalScope )

B

Interface
Event: beforeprint　未対応ブラウザあり ( Window ); beforeunload ( Window ); blur
Parameter: baseURI ( Node ); baseURIObject ( Node ); body ( Document ); bubbles ( Event ); button ( MouseEvent ); buttons ( MouseEvent )
Method: btoa() ( WindowOrWorkerGlobalScope )

C

Interface: ClipboardEvent; CSS Object Model
Event: canplay; canplaythrough; change; click; contextmenu; copy; cut
Parameter: cancelable ( Event ); caches ( WindowOrWorkerGlobalScope ); charCode ( KeyboardEvent ); characterSet ( Document ); childNodes ( Node ); classList ( Element ); className ( Element ); clearInterval() ( WindowOrWorkerGlobalScope ); clearTimeout() ( WindowOrWorkerGlobalScope ); clientHeight ( Element ); clientLeft ( Element ); clientTop ( Element ); clientWidth ( Element ); clientX ( MouseEvent ); clientY ( MouseEvent ); closed ( Window ); code ( KeyboardEvent ); computedName ( Element ); computedRole ( Element ); console ( Window ); controllers ( Window ); cookie ( Document ); ctrlKey ( MouseEvent,KeyboardEvent ); currentTarget ( Event )
Method: cloneNode() ( Node ); closest() ( Element ); computedStyleMap() ( Element ); compareDocumentPosition() ( Node ); contains() ( Node ); createEvent(); crypto ( Window ); createImageBitmap() ( WindowOrWorkerGlobalScope ); createShadowRoot() ( Element ); customElements ( Window )

D

Interface: Document; DragEvent
Event: dblclick; devicemotion ( Window ); deviceorientation ( Window ); drag; dragend; dragenter; dragleave; dragover; dragstart; drop; durationchange
Parameter: data ( InputEvent ); defaultPrevented ( Event ); defaultView ( Document ); deltaMode ( WheelEvent ); deltaX ( WheelEvent ); deltaY ( WheelEvent ); deltaZ ( WheelEvent ); designMode ( Document ); detail ( UiEvent ); devicePixelRatio ( Window ); dialogArguments ( Window ); dir ( Document ); doctype ( Document ); document ( Window ); documentElement ( Document ); documentURI ( Document ); domain ( Document ); DOMMatrix ( Window ); DOMMatrixReadOnly ( Window ); DOMPoint ( Window ); DOMPointReadOnly ( Window ); DOMQuad ( Window ); DOMRect ( Window ); DOMRectReadOnly ( Window )
Method: dispatchEvent() ( EventTarget )

E

Interface: Element; EventTarget; Event
Event: emptied; ended; error
Parameter: elapsedTime ( AnimationEvent,TransitionEvent ); embeds ( Document ); event ( Window ); eventPhase ( Event )
Method: entries() ( NodeList )

F

Interface: FocusEvent
Event: focus; focusin; focusout; fullscreenchange; fullscreenerror
Parameter: featurePolicy ( Document ); firstChild ( Node ); fonts ( Document ); forms ( Document ); frameElement ( Window ); frames ( Window ); fullScreen ( Window ); fullscreenElement ( DocumentOrShadowRoot )
Method: fetch() ( WindowOrWorkerGlobalScope ); forEach() ( NodeList )

G

Interface: GamepadEvent
Event: gamepadconnected ( Window ); gamepaddisconnected ( Window )
Parameter
Method: getAnimations() ( Element ); getAttribute() ( Element ); getAttributeNames() ( Element ); getAttributeNS() ( Element ); getAttributeNode() ( Element ); getAttributeNodeNS() ( Element ); getBoundingClientRect() ( Element ); getClientRects() ( Element ); getElementsByClassName() ( Element ); getElementsByTagName() ( Element ); getElementsByTagNameNS() ( Element ); getModifierState() ( Event ); getRootNode() ( Node )

H

Interface: HashChangeEvent
Event: hashchange ( Window )
Parameter: head ( Document ); hidden ( Document ); history ( Window )
Method: hasAttribute() ( Element ); hasAttributeNS() ( Element ); hasAttributes() ( Element ); hasChildNodes() ( Node ); hasPointerCapture() ( Element )

I

Interface: InputEvent
Event: input; invalid
Parameter: id ( Element ); images ( Document ); implementation ( Document ); indexedDB ( WindowOrWorkerGlobalScope ); innerHeight ( Window ); innerHTML ( Element ); innerWidth ( Window ); inputType ( InputEvent ); isConnected( Node ); isSecureContext ( Window ); isSecureContext ( WindowOrWorkerGlobalScope ); isTrusted ( Event )
Method: insertAdjacentElement() ( Element ); insertAdjacentHTML() ( Element ); insertAdjacentText() ( Element ); insertBefore() ( Node ); item() ( NodeList ); isDefaultNamespace() ( Node ); isEqualNode() ( Node ); isSameNode() ( Node )

J

K

Interface: KeyboardEvent
Event: keydown; keypress; keyup
Parameter: key ( KeyboardEvent ); keyCode( KeyboardEvent )
Method: keys() ( NodeList )

L

Interface
Event: languagechange ( Window ); load; loadeddata; loadedmetadata; loadstart
Parameter: lastChild ( Node ); lastModified ( Document ); lastStyleSheetSet ( Document ); length ( NodeList ); length ( Window ); links ( Document ); localName ( Element ); localname ( Attr ); localStorage ( Window ); location ( Document ); location ( KeyboardEvent ); location ( Window ); locationbar ( Window )
Method: lookupPrefix() ( Node ); lookupNamespaceURI() ( Node )

M

Interface: MouseEvent
Event: message ( Window ); mousedown; mouseenter; mouseleave; mousemove; mouseout; mouseover; mouseup
Parameter: menubar ( Window ); messageManager ( Window ); mozInnerScreenX ( Window ); mozInnerScreenY ( Window ); metaKey ( MouseEvent,KeyboardEvent ); mozSyntheticDocument ( Document )
Method: matches() ( Element )

N

Interface: Node; NodeList
Event
Parameter: name ( Attr ); name ( Window ); namespaceURI ( Attr ); namespaceURI ( Element ); navigator ( Window ); nextElementSibling ( NonDocumentTypeChildNode ); nextSibling ( Node ); newURL ( HashChangeEvent ); nodeName ( Node ); nodePrincipal ( Node ); nodeType ( Node ); nodeValue ( Node )
Method: normalize() ( Node )

O

Interface: OfflineAudioCompletionEvent
Event: offline　未対応のブラウザあり ( Window ); online　未対応のブラウザあり ( Window ); open
Parameter: oldURL ( HashChangeEvent ); outerHTML ( Element ); opener ( Window ); openOrClosedShadowRoot ( Element ); origin ( WindowOrWorkerGlobalScope ); outerHeight ( Window ); outerWidth ( Window ); ownerElement ( Attr ); ownerDocument ( Node )

P

Interface: PageTransitionEvent; PopStateEvent; ProgressEvent
Event: pagehide ( Window ); pageshow ( Window ); paste; pause; play; playing; plugins ( Document ); onpopstate ( Window ); preferredStyleSheetSet ( Document ); progress
Parameter: pageX ( MouseEvent ); pageY ( MouseEvent ); pageXOffset ( Window ); pageYOffset ( Window ); parent ( Window ); parentNode ( Node ); parentElement ( Node ); part ( Element ); performance ( Window ); personalbar ( Window ); prefix ( Attr ); prefix ( Element ); previousElementSibling ( NonDocumentTypeChildNode ); pointerLockElement ( DocumentOrShadowRoot ); previousSibling ( Node ); persisted ( PageTransitionEvent ); propertyName ( TransitionEvent )
Method: pseudo() ( Element ); preventDefault() ( Event )

Q

Method: querySelector() ( Element ); querySelectorAll() ( Element )

R

Interface
Event: readystatechange ( Document ); ratechange; reset; resize
Parameter: readyState ( Document ); referrer ( Document ); relatedTarget ( MouseEvent、FocusEvent )
Method: releasePointerCapture() ( Element ); remove() ( ChildNode ); removeAttribute() ( Element ); removeAttributeNS() ( Element ); removeAttributeNode() ( Element ); removeChild() ( Node ); removeEventListener() ( EventTarget ); replaceChild() ( Node ); requestFullscreen() ( Element ); requestPointerLock() ( Element )

S

Interface: StorageEvent
Event: scroll; search; seeked; seeking; select; show　未対応のブラウザあり; stalled; storage ( Window ); submit; suspend
Parameter: screen ( Window ); screenLeft ( Window ); screenTop ( Window ); screenX ( MouseEvent ); screenX ( Window ); screenY ( MouseEvent ); screenY ( Window ); scripts ( Document ); scrollbars ( Window ); scrollMaxX ( Window ); scrollMaxY ( Window ); scrollX ( Window ); scrollY ( Window ); scrollingElement ( Document ); scrollHeight ( Element ); scrollLeft ( Element ); scrollLeftMax ( Element ); scrollTop ( Element ); scrollTopMax ( Element ); scrollWidth ( Element ); selectedStyleSheetSet ( Document ); self ( Window ); sessionStorage ( Window ); shadowRoot ( Element ); shiftKey ( MouseEvent, KeyboardEvent ); sidebar ( Window ); slot ( Element ); styleSheets ( DocumentOrShadowRoot ); styleSheetSets ( Document )
Method: scroll() ( Element ); scrollBy() ( Element ); scrollIntoView() ( Element ); scrollTo() ( Element ); setAttribute() ( Element ); setAttributeNS() ( Element ); setAttributeNode() ( Element ); setAttributeNodeNS() ( Element ); setCapture() ( Element ); setInterval() ( WindowOrWorkerGlobalScope ); setPointerCapture() ( Element ); setTimeout() ( WindowOrWorkerGlobalScope ); specified ( Attr ); speechSynthesis ( Window ); status ( Window ); statusbar ( Window ); stopImmediatePropagation() ( Event ); stopPropagation() ( Event )

T

Interface: TouchEvent
Event: timeupdate; toggle; touchcancel; touchend; touchmove; touchstart; transitionend
Parameter: tabStop ( Element ); tagName ( Element ); target ( Event ); targetTouches ( Event ); textContent ( Node ); timeline ( Document ); timeStamp ( Event ); title ( Document ); toolbar ( Window ); top ( Window ); touches ( Event ); transitionend ( Event ); type ( Event )
Method: toggleAttribute() ( Element )

U

Interface: UiEvent
Event: unhandledrejection ( Window ); unload ( Window )
Parameter: undoManager ( Element ); undoScope ( Element ); URL ( Document )

V

Interface
Event: visibilitychange ( Document ); volumechange
Parameter: visualViewport ( Window ); view ( Event ); visibilityState ( Document )
Method: value ( Attr ); values() ( NodeList )

oncanplaythroughイベント

構文（Syntax）

in HTML

in JavaScript

備考（Remarks）

関連（Related）

HTML

CSS

DOM