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前端自动检查更新，适用Vue任何版本项目，包服务端更后客户端更新

news 来源：原创 2024/5/12 18:56:54

实现思路

请求当前项目根路径
提前文件中的标签路径
对比路径和刷新页面

按上思路不做优化项自动更新效率不足50%

优化项
剔除浏览器插件引入的JS包到项目里面，增加对比标签数量，和防止有浏览器插件用户无限刷新
剔除 http 网路地址协议的JS标签路径，减少对比干扰，和其它BUG
对比当前打开页面路径和请求回来的根页面的 JS 标签和路径，大大提高更新后的刷新率(100%更新刷新)
页面切换后台时停止检查更新（阻止无效的JS逻辑）

完整代码复制即用

const _window = window as any;/* 是否在弹框状态 */
let timeoutID: any = 0, isMessageBox = false;const WithdrawLinks = async (html: string): Promise<string[]> => {/* 这段正则全局匹配可以放到外面去，注意lastIndex即可 */const scriptReg = /<script.*src=["'](?<src>[^"']+)/gm;const linkReg = /<link.*href=["'](?<href>[^"']+)/gm;let result: Array<string> = [], link: Array<string> = [], match: any;while ((match = scriptReg.exec(html))) {result.push(match.groups.src);}while ((match = linkReg.exec(html))) {link.push(match.groups.href);}const eliminate = <T>(result: string[]): string[] => {let filterList: string[] = [];filterList = result.filter((element) => !element.startsWith('chrome-extension://'));filterList = result.filter((element) => !element.match(/^http(s?):\/\/[^ ]+/g));return filterList}return [...eliminate(link), ...eliminate(result)];}// 检查更新
async function CheckForUpdates() {const HaulAwayHTML = await WithdrawLinks(await fetch('/').then(resp => resp.text()));const renderHTML = await WithdrawLinks(document.documentElement.innerHTML)let result = false;console.log(HaulAwayHTML, renderHTML);if (renderHTML.length !== HaulAwayHTML.length) {result = true;} else {for (let i = 0; i < HaulAwayHTML.length; i++) {if (renderHTML[i] !== HaulAwayHTML[i]) {result = true;break;}}}return result;
}document.addEventListener("visibilitychange", function () {const status = document.visibilityStateif (status === 'hidden') {timeoutID && clearTimeout(timeoutID);timeoutID = null;} else if (status === 'visible') {!isMessageBox && autoRefresh();}
});// 调用即可
export const autoRefresh = async () => {timeoutID = setTimeout(async () => {const willUpdate = await CheckForUpdates();if (willUpdate) {clearTimeout(timeoutID);isMessageBox = true;const confirm: boolean = window.confirm('页面有更新，点击确定刷新页面?')if (confirm) { _window.location.reload(true); } else {isMessageBox = false;autoRefresh();}} else {autoRefresh();}}, 10000);
}