好吧，伙计们，我有答案了。只需要模拟长时间按键。下面是工作解决方案，谢谢我以后呵呵：

function simulateLongPress() {
  const element = document.getElementById("myElement"); // Replace "myElement" with the actual ID of your target element

  // Create and dispatch a "mousedown" event
  const mousedownEvent = new MouseEvent("mousedown", {
    bubbles: true,
    cancelable: true,
    view: window
  });
  element.dispatchEvent(mousedownEvent);

  // Wait for a specific duration to simulate the long press
  const longPressDuration = 1000; // 1 second
  setTimeout(() => {
    // Create and dispatch a "mouseup" event
    const mouseupEvent = new MouseEvent("mouseup", {
      bubbles: true,
      cancelable: true,
      view: window
    });
    element.dispatchEvent(mouseupEvent);

    // Create and dispatch a "click" event
    const clickEvent = new MouseEvent("click", {
      bubbles: true,
      cancelable: true,
      view: window
    });
    element.dispatchEvent(clickEvent);
  }, longPressDuration);
}

// Call the function to simulate a long press
simulateLongPress();

实际上不需要计时，只需要mousedown事件就可以了！