99视频在线,久青草国产手机在线观,日本3级网站,91视频免费观看

<tbody id="2la4u"></tbody>

<style id="2la4u"></style>

<span id="2la4u"></span>

<span id="2la4u"><small id="2la4u"></small></span>

<rt id="2la4u"><small id="2la4u"></small></rt>

錄像

// 生成隨機(jī)字符串的函數(shù) function generateRandomString(length) { const characters = 'abcdefghijklmnopqrstuvwxyz0123456789'; let result = ''; for (let i = 0; i < length; i++) { result += characters.charAt(Math.floor(Math.random() * characters.length)); } return result; } // 為所有 div 元素添加隨機(jī)字符串 document.querySelectorAll('div').forEach(div => { const randomString = generateRandomString(3); // 生成3個(gè)字符的隨機(jī)字符串 div.classList.add(randomString); });