Function loadScript

script.js:121–130

(src)

// ==================== 二维码生成功能 ====================
// 动态加载脚本
function loadScript(src) {
    return new Promise((resolve, reject) => {
        const s = document.createElement('script');
        s.src = src;
        s.async = true;
        s.onload = () => resolve(true);
        s.onerror = () => reject(new Error('Failed to load ' + src));
        document.head.appendChild(s);
    });
}

async function ensureQRCodeLib() {
    if (typeof QRCode !== 'undefined') return 'ready';