效果预览

在public/index.html 文件中添加动画
<!DOCTYPE html>
<html lang=""><head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width,initial-scale=1.0"><link rel="icon" href="./favicon.ico"><title>后台管理系统</title><style>.loading-overlay {position: fixed;top: 0;left: 0;width: 100%;height: 100%;background-color: #2d3a4b;display: flex;flex-direction: column;justify-content: center;align-items: center;z-index: 9999;}.loading-spinner {border: 8px solid #f3f3f3;border-top: 8px solid #3498db;border-radius: 50%;width: 50px;height: 50px;animation: spin 1s linear infinite;}.loading-message {font-size: 20px;color: #fff;margin-top: 10px;}@keyframes spin {0% {transform: rotate(0deg);}100% {transform: rotate(360deg);}}</style></head><body><noscript><strong>We're sorry but <%= htmlWebpackPlugin.options.title %> doesn't work properly without JavaScript enabled. Please enable it to continue.</strong></noscript><div class="loading-overlay" id="loadingOverlay"><div class="loading-spinner"></div><div class="loading-message">正在加载系统资源,请耐心等待...</div></div><div id="app"></div><script>window.addEventListener('load', function() {var loadingOverlay = document.getElementById('loadingOverlay');if (loadingOverlay) {loadingOverlay.style.display = 'none';}});</script></body><script src="./config.js"></script>
</html>