mouse event

function createMouseEvent(eventType, rect) {
    return new MouseEvent(eventType, {
        bubbles: true,
        cancelable: true,
        view: window,
        clientX: rect.left + rect.width / 2,  // 元素的水平中心
        clientY: rect.top + rect.height / 2,  // 元素的垂直中心
        screenX: window.screenX + rect.left + rect.width / 2,  // 相对于屏幕的位置
        screenY: window.screenY + rect.top + rect.height / 2,  // 相对于屏幕的位置
        button: 0  // 左键
    });
}

const rect = ele.getBoundingClientRect();
ele.dispatchEvent(createMouseEvent('mousedown', rect));
ele.dispatchEvent(createMouseEvent('mouseup', rect));
ele.dispatchEvent(createMouseEvent('click', rect));  // 模拟 click 事件

point event

function createPointerEvent(eventType, rect) {
    return new PointerEvent(eventType, {
        bubbles: true,
        cancelable: true,
        view: window,
        clientX: rect.left + rect.width / 2,
        clientY: rect.top + rect.height / 2,
        screenX: window.screenX + rect.left + rect.width / 2,
        screenY: window.screenY + rect.top + rect.height / 2,
        button: 0,
        pointerId: 1,  // 指针 ID，一般使用 1
        width: 1,      // 指针宽度
        height: 1,     // 指针高度
        pressure: 0.5  // 模拟的触控压力，0-1 范围
    });
}

const observer = new MutationObserver((mutations, obs) => {
        let ele = document.querySelector('div')
        if (ele) {
            //todo 
        }
    });

observer.observe(ele, {
            childList: true,
            subtree: true
        });