Element: auxclick event

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Preventing default actions
范例
规范
浏览器兼容性
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auxclick event is fired at an 元素 when a non-primary pointing device button (any mouse button other than the primary—usually leftmost—button) has been pressed and released both within the same element.

auxclick is fired after the mousedown and mouseup events have been fired, in that order.

冒泡	Yes
可取消	Yes
接口	`MouseEvent`
事件处理程序特性	`onauxclick`

Preventing default actions

For the vast majority of browsers that map middle click to opening a link in a new tab, including Firefox, it is possible to cancel this behavior by calling preventDefault() from within an auxclick event handler.

When listening for auxclick events originating on elements that do not support input or navigation, you will often want to explicitly prevent other default actions mapped to the down action of the middle mouse button. On Windows this is usually autoscroll, and on macOS and Linux this is usually clipboard paste. This can be done by preventing the default behaviour of the mousedown or pointerdown 事件。

Additionally, you may need to avoid opening a system context menu after a right click. Due to timing differences between operating systems, this too is not a preventable default behavior of auxclick . Instead, this can be done by preventing the default behavior of the contextmenu 事件。

范例

In this example we define functions for two event handlers — onclick and onauxclick . The former changes the color of the button background, while the latter changes the button foreground (text) color. You also can see the two functions in action by trying the demo out with a multi-button mouse ( see it live on GitHub ; also see the source code ).

JavaScript

let button = document.querySelector('button');
let html = document.querySelector('html');
function random(number) {
  return Math.floor(Math.random() * number);
}
function randomColor() {
    return `rgb(${random(255)}, ${random(255)}, ${random(255)})`;
}
button.onclick = function() {
  button.style.backgroundColor = randomColor();
};
button.onauxclick = function(e) {
  e.preventDefault();
  button.style.color = randomColor();
}
button.oncontextmenu = function(e) {
  e.preventDefault();
}

Notice that in addition to capturing the auxclick event using onauxclick ， contextmenu event is also captured, and preventDefault() called on that event, in order to prevent the context menu from popping up after the color change is applied.

HTML

<button><h1>Click me!</h1></button>

CSS

html {
  height: 100%;
  overflow: hidden;
}
body {
  height: inherit;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0;
}
button {
  border: 0;
  background-color: white;
  font-size: 8vw;
  display: block;
  width: 100%;
  height: 100%;
}
h1 {
  letter-spacing: 0.5rem;
}

结果

注意 : If you are using a three-button mouse, you'll notice that the onauxclick handler is run when any of the non-left mouse buttons are clicked (usually including any "special" buttons on gaming mice).

规范

规范	状态
UI Events The definition of 'auxclick' in that specification.	工作草案

浏览器兼容性

更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`auxclick` event	Chrome 55	Edge ≤79	Firefox 53 注意事项 53 注意事项 Starting in Firefox 68, the `auxclick` event is used to trigger the new tab on middle-click action; previously, this had been done with the `click` event. Apps can prevent middle-click from opening new tabs (or middle-click to paste, if that feature is enabled) by intercepting `auxclick` on links, and `auxclick` event handlers can now open popups without triggering the popup blocker.	IE 不支持 No	Opera 42	Safari 不支持 No	WebView Android 55	Chrome Android 55	Firefox Android 53	Opera Android 42	Safari iOS 不支持 No	Samsung Internet Android 6.0

在此页

Preventing default actions

范例

JavaScript

HTML

CSS

结果

规范

浏览器兼容性

图例

另请参阅

元数据

相关话题