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HTML DOM removeEventListener()メソッド

❮要素オブジェクト

addEventListener()メソッドでアタッチされた「mousemove」イベントを削除します。

// Attach an event handler to <div>
document.getElementById("myDIV").addEventListener("mousemove", myFunction);

// Remove the event handler from <div>
document.getElementById("myDIV").removeEventListener("mousemove", myFunction);

定義と使用法

removeEventListener()メソッドは、addEventListener() メソッドでアタッチされたイベントハンドラーを削除します。

注:イベントハンドラーを削除するには、addEventListener()メソッドで指定された関数は、上記の例(myFunction)のように外部関数である必要があります。

" element .removeEventListener(" event "、function(){ myScript });"などの匿名関数 動作しないでしょう。


ブラウザのサポート

表の数字は、このメソッドを完全にサポートする最初のブラウザバージョンを示しています。

Method
removeEventListener() 1.0 9.0 1.0 1.0 7.0

構文

element.removeEventListener(event, function, useCapture)

パラメータ値

Parameter Description
event Required. A String that specifies the name of the event to remove.

Note: Do not use the "on" prefix. For example, use "click" instead of "onclick".

Tip: For a list of all HTML DOM events, look at our complete HTML DOM Event Object Reference.
function Required. Specifies the function to remove.
useCapture Optional. A Boolean value that specifies the event phase to remove the event handler from.

Possible values:
  • true - Removes the event handler from the capturing phase
  • false- Default. Removes the event handler from the bubbling phase
Note: If the event handler was attached two times, one with capturing and one bubbling, each must be removed separately.


技術的な詳細

DOMバージョン: DOMレベル2イベント
戻り値: 戻り値なし
変更ログ: useCaptureパラメーターはFirefox6およびOpera12.0でオプションになりました(Chrome、IE、Safariでは常にオプションでした)

その他の例

removeEventListener()メソッドをサポートしていないブラウザーの場合は、detachEvent()メソッドを使用できます。

この例は、クロスブラウザーソリューションを示しています。

var x = document.getElementById("myDIV");
if (x.removeEventListener) {                   // For all major browsers, except IE 8 and earlier
  x.removeEventListener("mousemove", myFunction);
} else if (x.detachEvent) {                    // For IE 8 and earlier versions
  x.detachEvent("onmousemove", myFunction);
}

関連ページ

JavaScriptチュートリアル:HTML DOM EventListener

JavaScriptリファレンス:document.removeEventListener()


❮要素オブジェクト