function change_icon() {
const changeFavicon = link => {
let $favicon = document.querySelector('link[rel="icon"]');
if ($favicon !== null) {
$favicon.href = link;
} else {
$favicon = document.createElement("link");
$favicon.rel = "icon";
$favicon.href = link;
document.head.appendChild($favicon);
}
};
// 设置图标地址
let iconUrl = `./icoImg/1.ico`
// 动态修改网站图标
changeFavicon(iconUrl);
}