可以通过 JS 代码实现鼠标中键展开文档吗？

// 中键点击展开：基于 https://ld246.com/article/1682476267736/comment/1682479365610?r=Undii#comments

let g_reset = setInterval(main, 2000);

function main() {
    if (document.querySelector('.sy__file')) {
        clearInterval(g_reset);
    }else{
        return false;
    }
    document.querySelector('.sy__file').addEventListener('mousedown', event => {
        if (event.button != 1) return;
        event.preventDefault();
        if (!event.target.classList.contains('b3-list-item__text')) return;
        if (event.target.parentNode.getAttribute("data-type") !== "navigation-file") return;
        const b3ListItemToggle = event.target.parentNode.querySelector('.b3-list-item__toggle');
        if (b3ListItemToggle.classList.contains('fn__hidden')) return;
        b3ListItemToggle.click();
    });
}

​

第三版：与第二版差不多【扩大响应范围（中键点左边的空白、:和 + 都会响应，但可能有副作用）】。应该能适合更多用户的情况。

// 中键点击展开3：基于https://ld246.com/article/1682476267736
(function(){
    let g_reset = setInterval(main, 2000);

    function main() {
        if (document.querySelector('.sy__file')) {
            clearInterval(g_reset);
        }else{
            return false;
        }
        document.querySelector('.sy__file').addEventListener('mousedown', event => {
            if (event.button != 1) return;
            let notTitleFlag = false;
            if (!event.target.classList.contains('b3-list-item__text')) notTitleFlag = true;
            let target = event.target.parentNode;
            let temp = event.target;
            //console.log("0426",event);
            for (let i = 0; i < 4 && temp; i++) {
                if (temp?.getAttribute("data-type") == "navigation-file"
                    || temp?.getAttribute("data-type") == "navigation-root") {
                    target = temp;
                    break;
                }
                temp = temp?.parentNode;
            }
            //console.log("0426target", target);
            if (target?.getAttribute("data-type") == "navigation-file"
              || target?.getAttribute("data-type") == "navigation-root") {
                const b3ListItemToggle = target.querySelector('.b3-list-item__toggle');
                const title = target.querySelector('.b3-list-item__text');
                if (b3ListItemToggle.classList.contains('fn__hidden')) return;
                event.preventDefault();
                b3ListItemToggle.click();
                if (event.ctrlKey) {
                    title.click();
                }
            }
        }, true);
    }
})();


​