被引次数的标识似乎有点问题 about rem-craft HOT 19 CLOSED

function loadStyle(url, id, cssName) {
    var headElement = document.head;

    let style = document.getElementById(id);
    if (id != null) {
        if (style) headElement.removeChild(style);
    }

    style = document.createElement("link");
    if (id != null) style.id = id;

    style.setAttribute("type", "text/css");
    style.setAttribute("rel", "stylesheet");
    style.setAttribute("href", url);
    if (cssName != null) style.setAttribute("class", cssName);
    headElement.appendChild(style);
    return style;
}

function addButton() {
    var buttonList = document
        .getElementById("barHelp")
        .getElementsByTagName("div")[0];
    var buttonElement = document.createElement("button");
    buttonElement.id = "hide_left_column";
    buttonElement.setAttribute("class", "b3-menu__item");
    buttonList.appendChild(buttonElement);
    buttonElement.innerHTML =
        "<svg class='b3-menu__icon'><use xlink:href='#iconLeft'></use></svg><span class='b3-menu__label'>隐藏左侧菜单</span>";

    var offNo = localStorage.getItem("hide_left_column");
    if (offNo == "1") {
        loadStyle(
            "/appearance/themes/notion-theme/style/topbar/leftcolumn.css",
            "leftColumn悬浮"
        ).setAttribute("topBarcss", "leftColumn悬浮");
        localStorage.setItem("hide_left_column", "1");
        var btn = document.getElementById("hide_left_column");
        btn.removeAttribute("class");
        btn.setAttribute("class", "b3-menu__item b3-menu__item--selected");
    } else if (offNo != "0") {
        localStorage.setItem("hide_left_column", "0");
        document.getElementById("leftColumn悬浮").remove();
        localStorage.setItem("hide_left_column", "0");
        btn.removeAttribute("class");
        btn.setAttribute("class", "b3-menu__item");
    }

    buttonElement.addEventListener("click", () => {
        var offNo = localStorage.getItem("hide_left_column");
        var btn = document.getElementById("hide_left_column");
        if (offNo == "0") {
            loadStyle(
                "/appearance/themes/notion-theme/style/topbar/leftcolumn.css",
                "leftColumn悬浮"
            ).setAttribute("topBarcss", "leftColumn悬浮");
            localStorage.setItem("hide_left_column", "1");
            btn.removeAttribute("class");
            btn.setAttribute("class", "b3-menu__item b3-menu__item--selected");
            offNo = "1";
            return;
        }

        if (offNo == "1") {
            document.getElementById("leftColumn悬浮").remove();
            localStorage.setItem("hide_left_column", "0");
            btn.removeAttribute("class");
            btn.setAttribute("class", "b3-menu__item");
            offNo = "0";
            return;
        }
    });
}

addButton();