appCacheReload
当manifest文件改变后，如果缓存文件超过给定时长，立即更新
快速开始
<script src="index.js" app-cache-timeout="604800000" app-cache-timeout-key="appCache:timeout"></script>app-cache-timeout为必填项，app-cache-timeout-key的默认值是appCache:timeout
当manifest文件改变后，如果缓存文件超过给定时长，立即更新
<script src="index.js" app-cache-timeout="604800000" app-cache-timeout-key="appCache:timeout"></script>app-cache-timeout为必填项，app-cache-timeout-key的默认值是appCache:timeout