// change its href to the given link. if ($favicon !== null
const changeFavicon = link => { let $favicon = document.querySelector(‘link[rel="icon"]‘); // If a <link> element already exists, // change its href to the given link. if ($favicon !== null) { $favicon.href = link; // Otherwise, create a new element and append it to <head>. } else { $favicon = document.createElement("link"); $favicon.rel = "icon"; $favicon.href = link; document.head.appendChild($favicon); } }; let icon = ‘‘; // 图片地点 changeFavicon(icon); // 动态改削网站图标 let title = ‘‘; // 网站标题 document.title = title; // 动态改削网站标题
js 设置网页图标和标题
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![[转]Node.js中package.json中^和~的区别](/uploads/allimg/200519/054J34453_lit.png "[转]Node.js中package.json中^和~的区别")