javascript - 在 JavaScript 中检测点击与触摸

Question

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Answer 1

您可以使用 pointerType property on PointerEvent检测输入类型(“mouse”、“touch” 或 “pen”):

element.addEventListener('pointerdown', (event) => {
  if (event.pointerType === "mouse") {}
  if (event.pointerType === "touch") {}
  if (event.pointerType === "pen") {}
});

如果您想为每种类型的点击指定特定的事件，您可以 create custom events :

const mouse = new Event("mouseclick");
const touch = new Event("touch");
document.addEventListener("pointerdown", ({ pointerType, target }) => {
  if (pointerType === "mouse") target.dispatchEvent(mouse);
  if (pointerType === "touch") target.dispatchEvent(touch);
});

const someElement = document.querySelector(".box");
someElement.addEventListener("mouseclick", () => {
  console.log("Clicked with mouse");
});
someElement.addEventListener("touch", () => {
  console.log("Touched with mobile device");
});
someElement.addEventListener("click", () => {
  console.log("Clicked by some device (we don't know)");
});

.box {
  position: absolute;
  inset: 2em;
  background: darkred;
  padding: 1em;
}

<div class="box">A box with custom events</div>

(注意:未在触摸屏设备上测试)

请注意，如果您使用的是 React 或其他框架，则可能有不同的方法来创建自定义事件。

例如，在 React 中，您可以使用自定义 Hook 实现这些事件:

const useClickEvents = ({ onMouseClick, onTouch, onClick }) => ({
  onClick,
  onPointerDown({ pointerType }) {
    if (pointerType === "mouse") onMouseClick(); 
    if (pointerType === "touch") onTouch(); 
  },
});
function SomeComponent({ onClick, onMouseClick, onTouch, children }) {
  const clickEventProps = useClickEvents({ onClick, onMouseClick, onTouch });
  return (
    <div className="something" {...clickEventProps}>
      <p>Custom events on this thing</p>
      {children}
    </div>
  );
}