{"id":6269,"date":"2017-07-12T00:59:00","date_gmt":"2017-07-11T16:59:00","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=6269"},"modified":"2018-04-24T22:48:27","modified_gmt":"2018-04-24T14:48:27","slug":"service-worker-cachestorage-offline-develop","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2017\/07\/service-worker-cachestorage-offline-develop\/","title":{"rendered":"\u501f\u52a9Service Worker\u548ccacheStorage\u7f13\u5b58\u53ca\u79bb\u7ebf\u5f00\u53d1"},"content":{"rendered":"

by zhangxinxu<\/a> from http:\/\/www.zhangxinxu.com\/wordpress\/?p=6269<\/a>
\n\u672c\u6587\u53ef\u5168\u6587\u8f6c\u8f7d\uff0c\u4f46\u9700\u5f97\u5230\u539f\u4f5c\u8005\u4e66\u9762\u8bb8\u53ef\uff0c\u540c\u65f6\u4fdd\u7559\u539f\u4f5c\u8005\u548c\u51fa\u5904\uff0c\u6458\u8981\u5f15\u6d41\u5219\u968f\u610f\u3002<\/p>\n

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\u672c\u6587\u6240\u8981\u4ecb\u7ecd\u7684\u57fa\u4e8eService Worker\u548ccacheStorage\u7f13\u5b58\u53ca\u79bb\u7ebf\u5f00\u53d1\uff0c\u5957\u8def\u975e\u5e38\u56fa\u5b9a\uff0c\u65e0\u4fb5\u5165\uff0c\u4e14\u8bed\u8a00\u7eaf\u6b63\uff0c\u76f4\u63a5\u590d\u5236\u7c98\u8d34\u5c31\u53ef\u4ee5\u5b9e\u73b0\u7f13\u5b58\u548c\u79bb\u7ebf\u529f\u80fd\uff0c\u7eaf\u524d\u7aef\uff0c\u65e0\u9700\u670d\u52a1\u5668\u914d\u5408\u3002\u4e00\u4e2a\u770b\u4e0a\u53bb\u5f88\u9177\u7684\u529f\u80fd\u53ea\u8981\u590d\u5236\u7c98\u8d34\u5c31\u53ef\u4ee5\u5b9e\u73b0\uff0c\u7edd\u5bf9\u662f\u6210\u672c\u6781\u4f4e\u7684\uff0c\u5c0f\u767d\u4e2d\u7684\u5c0f\u767d\u4e5f\u80fd\u4e0a\u624b\u3002<\/p>\n

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\u5728\u5f00\u59cb\u6848\u4f8b\u524d\uff0c\u6211\u4eec\u6709\u5fc5\u8981\u5148\u4e86\u89e3\u51e0\u4e2a\u6982\u5ff5\u3002<\/p>\n

\u4e8c\u3001\u901a\u4fd7\u6613\u61c2\u7684\u65b9\u5f0f\u4ecb\u7ecdService Worker<\/h3>\n

Service Worker\u76f4\u767d\u7ffb\u8bd1\u5c31\u662f\u201c\u670d\u52a1\u4eba\u5458\u201d\uff0c\u770b\u4f3c\u4e0d\u7ecf\u610f\u7684\u7ffb\u8bd1\uff0c\u5b9e\u9645\u4e0a\u5374\u6b63\u9053\u51fa\u4e86Service Worker\u7684\u7cbe\u9ad3\u6240\u5728\u3002<\/p>\n

\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u5982\u679c\u6211\u4eec\u51b2\u7740\u53f6\u4fee\u7684\u96c6\u5361\u53bb\u9ea6\u5f53\u52b3\u6d88\u8d39\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n

\"\u53f6\u4fee\u96c6\u5361<\/p>\n

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Service Worker\u6982\u5ff5\u548c\u7528\u6cd5<\/h4>\n

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\u7531\u4e8eService Worker\u8d70\u7684\u662f\u53e6\u5916\u7684\u7ebf\u7a0b\uff0c\u56e0\u6b64\uff0c\u5c31\u7b97\u8fd9\u4e2a\u7ebf\u7a0b\u7ffb\u6c5f\u5012\u6d77\u4e5f\u4e0d\u4f1a\u963b\u585e\u4e3bJavaScript\u7ebf\u7a0b\uff0c\u4e5f\u5c31\u662f\u4e0d\u4f1a\u5f15\u8d77\u6d4f\u89c8\u5668\u9875\u9762\u52a0\u8f7d\u7684\u5361\u987f\u4e4b\u7c7b\u3002\u540c\u65f6\uff0c\u7531\u4e8eService Worker\u8bbe\u8ba1\u4e3a\u5b8c\u5168\u5f02\u6b65\uff0c\u540c\u6b65API\uff08\u5982XHR<\/code>\u548clocalStorage<\/code>\uff09\u4e0d\u80fd\u5728Service Worker\u4e2d\u4f7f\u7528\u3002<\/p>\n

\u9664\u4e86\u4e0a\u9762\u7684\u4e9b\u9650\u5236\u5916\uff0cService Worker\u5bf9\u6211\u4eec\u7684\u534f\u8bae\u4e5f\u6709\u8981\u6c42\uff0c\u5c31\u662f\u5fc5\u987b\u662fhttps<\/code>\u534f\u8bae\u7684\uff0c\u4f46\u672c\u5730\u5f00\u53d1\u4e5f\u5f04\u4e2ahttps<\/code>\u534f\u8bae\u662f\u5f88\u9ebb\u70e6\u7684\uff0c\u597d\u5728\u8fd8\u7b97\u4eba\u6027\u5316\uff0cService Worker\u5728http:\/\/localhost<\/code>\u6216\u8005http:\/\/127.0.0.1<\/code>\u8fd9\u79cd\u672c\u5730\u73af\u5883\u4e0b\u7684\u65f6\u5019\u4e5f\u662f\u53ef\u4ee5\u8dd1\u8d77\u6765\u7684\u3002\u5982\u679c\u6211\u4eec\u60f3\u505a\u4e2ademo\u4e4b\u7c7b\u7684\u9875\u9762\u7ed9\u5176\u4ed6\u5c0f\u4f19\u4f34\u770b\uff0c\u6211\u4eec\u53ef\u4ee5\u501f\u52a9Github\uff08\u56e0\u4e3a\u662fhttps<\/code>\u534f\u8bae\u7684\uff09\uff0c\u4f8b\u5982\u6211\u5c31\u4e13\u95e8\u5efa\u4e86\u4e2ahttps-demo<\/a>\u7684\u5c0f\u9879\u76ee\uff0c\u4e13\u95e8\u7528\u6765\u653e\u7f6e\u4e00\u4e9b\u9700\u8981https<\/code>\u534f\u8bae\u7684demo\u9875\u9762\uff0c\u76f8\u4fe1\u79bb\u4e0d\u5f00https<\/code>\u7684\u6280\u672f\u573a\u666f\u4ee5\u540e\u4f1a\u8d8a\u6765\u8d8a\u591a\u3002<\/p>\n

\u6700\u540e\uff0cService workers\u5927\u91cf\u4f7f\u7528Promise<\/code>\uff0c\u56e0\u4e3a\u901a\u5e38\u5b83\u4eec\u4f1a\u7b49\u5f85\u54cd\u5e94\u540e\u7ee7\u7eed\uff0c\u5e76\u6839\u636e\u54cd\u5e94\u8fd4\u56de\u4e00\u4e2a\u6210\u529f\u6216\u8005\u5931\u8d25\u7684\u64cd\u4f5c\uff0c\u8fd9\u4e9b\u573a\u666f\u975e\u5e38\u9002\u5408Promise<\/code>\u3002\u5982\u679c\u5bf9Promise<\/code>\u4e0d\u662f\u5f88\u4e86\u89e3\uff0c\u53ef\u4ee5\u5148\u770b\u6211\u4e4b\u524d\u6587\u7ae0\uff1a\u201cES6 JavaScript Promise\u7684\u611f\u6027\u8ba4\u77e5<\/a>\u201d\uff0c\u7136\u540e\u518d\u770b\uff1a\u201cJavaScript Promise\u8ff7\u4f60\u4e66\uff08\u4e2d\u6587\u7248\uff09<\/a>\u201d\u3002<\/p>\n

Service Worker\u7684\u751f\u547d\u5468\u671f<\/h4>\n

\u6211\u4eec\u76f4\u63a5\u770b\u4e00\u4e2a\u4f8b\u5b50\u5427\uff0c\u5982\u4e0bHTML\u548cJS\u4ee3\u7801\uff1a<\/p>\n

<h3>\u4e00\u4e9b\u63d0\u793a\u4fe1\u606f<\/h3>\n<ul>\n    <li>\u6d4f\u89c8\u5668\u662f\u5426\u652f\u6301\uff1a<span id=\"isSupport\"><\/span><\/li>\n    <li>service worker\u662f\u5426\u6ce8\u518c\u6210\u529f\uff1a<span id=\"isSuccess\"><\/span><\/li>\n    <li>\u5f53\u524d\u6ce8\u518c\u72b6\u6001\uff1a<span id=\"state\"><\/span><\/li>\n    <li>\u5f53\u524dservice worker\u72b6\u6001\uff1a<span id=\"swState\"><\/span><\/li>\n<\/ul><\/pre>\n
<script src=\".\/static\/jquery.min.js\"><\/script>\n<script>\nif ('serviceWorker' in navigator) {\n    $('#isSupport').text('\u652f\u6301');<\/span>\n\n    \/\/ \u5f00\u59cb\u6ce8\u518cservice workers<\/span>\n    navigator.serviceWorker.register('.\/sw-demo-cache.js', {\n        scope: '.\/'\n    }).then(function (registration) {\n        $('#isSuccess').text('\u6ce8\u518c\u6210\u529f');<\/span>\n\n        var serviceWorker;\n        if (registration.installing) {\n            serviceWorker = registration.installing;\n            $('#state').text('installing');<\/span>\n        } else if (registration.waiting) {\n            serviceWorker = registration.waiting;\n            $('#state').text('waiting');<\/span>\n        } else if (registration.active) {\n            serviceWorker = registration.active;\n            $('#state').text('active');<\/span>\n        }\n        if (serviceWorker) {\n            $('#swState').text(serviceWorker.state);<\/span>\n            serviceWorker.addEventListener('statechange', function (e) {\n                $('#swState').append('&emsp;\u72b6\u6001\u53d8\u5316\u4e3a' + e.target.state);<\/span>\n            });\n        }\n    }).catch (function (error) {\n        $('#isSuccess').text('\u6ce8\u518c\u6ca1\u6709\u6210\u529f');<\/span>\n    });\n} else {\n    $('#isSupport').text('\u4e0d\u652f\u6301');<\/span>\n}\n<\/script><\/pre>\n
\u4ee3\u7801\u4f5c\u7528\u5f88\u7b80\u5355\uff0c\u5224\u65ad\u6d4f\u89c8\u5668\u662f\u5426\u652f\u6301Service Worker\u4ee5\u53ca\u8bb0\u5f55Service Worker\u7684\u751f\u547d\u5468\u671f\uff08\u5f53\u524d\u72b6\u6001\uff09\u3002<\/p>\n
\u5728Chrome\u6d4f\u89c8\u5668\u4e0b\uff0c\u5f53\u6211\u4eec\u7b2c\u4e00\u6b21\u8bbf\u95ee\u542b\u6709\u4e0a\u9762\u4ee3\u7801\u7684\u9875\u9762<\/a>\u65f6\u5019\uff0c\u7ed3\u679c\u4f1a\u662f\u8fd9\u6837\uff1a
\n<\/p>\n
\u4f1a\u770b\u5230\uff1ainstalling \u2192 installed \u2192 activating \u2192 activated\u3002<\/p>\n
\u8fd9\u4e2a\u72b6\u6001\u53d8\u5316\u8fc7\u7a0b\u5b9e\u9645\u4e0a\u5c31\u662fService Worker\u751f\u547d\u5468\u671f\u7684\u53cd\u5e94\u3002<\/p>\n
\u5f53\u6211\u4eec\u518d\u6b21\u5237\u65b0\u6b64\u9875\u9762\uff0c\u7ed3\u679c\u53c8\u4f1a\u662f\u8fd9\u6837\uff1a
\n\"\u5237\u65b0\u9875\u9762\u540e\u7684\u72b6\u6001\u8bb0\u5f55\"<\/p>\n
\u76f4\u63a5\u663e\u793a\u6ce8\u518c\u6210\u529f\u72b6\u6001\u3002<\/p>\n
Service Worker\u6ce8\u518c\u65f6\u5019\u7684\u751f\u547d\u5468\u671f\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n
    \n
  1. Download – \u4e0b\u8f7d\u6ce8\u518c\u7684JS\u6587\u4ef6<\/li>\n
  2. Install – \u5b89\u88c5<\/li>\n
  3. Activate – \u6fc0\u6d3b<\/li>\n<\/ol>\n
    \u4e00\u65e6\u5b89\u88c5\u5b8c\u6210\uff0c\u5982\u4f55\u6ce8\u518c\u7684JS\u6ca1\u6709\u53d8\u5316\uff0c\u5219\u76f4\u63a5\u663e\u793a\u5f53\u524d\u6fc0\u6d3b\u6001\u3002<\/p>\n
    \u7136\u800c\uff0c\u5b9e\u9645\u7684\u5f00\u53d1\u573a\u666f\u8981\u66f4\u52a0\u590d\u6742\uff0c\u4f7f\u5f97Service Worker\u8fd8\u6709\u5176\u5b83\u4e00\u4e9b\u72b6\u6001\u3002\u4f8b\u5982\u4e0b\u56fe\u8fd9\u6837\uff1a<\/p>\n
    \"service<\/p>\n
    \u51fa\u73b0\u4e86waiting<\/code>\uff0c\u8fd9\u662f\u600e\u4e48\u51fa\u73b0\u7684\u5462\uff1f\u6211\u4eec\u4fee\u6539\u4e86Service Worker\u6ce8\u518cJS\uff0c\u7136\u540e\u91cd\u8f7d\u7684\u65f6\u5019\u65e7\u7684Service Worker\u8fd8\u5728\u8dd1\uff0c\u65b0\u7684Service Worker\u5df2\u7ecf\u5b89\u88c5\u7b49\u5f85\u6fc0\u6d3b\u3002\u6211\u4eec\u6253\u5f00\u5f00\u53d1\u8005\u5de5\u5177\u9762\u677f\uff0cApplication \u2192 Service Workers\uff0c\u53ef\u80fd\u5c31\u4f1a\u5982\u4e0b\u56fe\u8fd9\u6837\uff1a<\/p>\n
    \"waiting\u72b6\u6001\u63a7\u5236\u9762\u677f\u622a\u56fe\u793a\u610f\"<\/p>\n
    \u6b64\u65f6\uff0c\u6211\u4eec\u9875\u9762\u5f3a\u5237\u4e0b\u4f1a\u53d8\u6210\u8fd9\u6837\uff0c\u8fdb\u884c\u4e86\u6fc0\u6d3b\uff1a<\/p>\n
    \"\u5f3a\u5237\u540e\u5f00\u59cb\u6fc0\u6d3b\"<\/p>\n
    \u518d\u6b21\u5237\u65b0\u53c8\u56de\u5230\u6ce8\u518c\u5b8c\u6bd5\u72b6\u6001\u3002<\/p>\n
    \"\u518d\u6b21\u5237\u65b0\u540e\u7684\u72b6\u6001\"<\/p>\n
    \u7136\u540e\uff0c\u8fd9\u4e9b\u5bf9\u5e94\u7684\u72b6\u6001\uff0cService Worker\u662f\u6709\u5bf9\u5e94\u7684\u4e8b\u4ef6\u540d\u8fdb\u884c\u6355\u83b7\u7684\uff0c\u4e3a\uff1a<\/p>\n
    self.addEventListener('install', function(event) { \/* \u5b89\u88c5\u540e... *\/ });<\/pre>\n
    self.addEventListener('activate', function(event) { \/* \u6fc0\u6d3b\u540e... *\/ });<\/pre>\n
    \u6700\u540e\uff0cService Worker\u8fd8\u652f\u6301fetch<\/code>\u4e8b\u4ef6\uff0c\u6765\u54cd\u5e94\u548c\u62e6\u622a\u5404\u79cd\u8bf7\u6c42\u3002<\/p>\n
    self.addEventListener('fetch', function(event) { \/* \u8bf7\u6c42\u540e... *\/ });<\/pre>\n
    \u57fa\u672c\u4e0a\uff0c\u76ee\u524dService Worker\u7684\u6240\u6709\u5e94\u7528\u90fd\u662f\u57fa\u4e8e\u4e0a\u97623\u4e2a\u4e8b\u4ef6\u7684\uff0c\u4f8b\u5982\uff0c\u672c\u6587\u8981\u4ecb\u7ecd\u7684\u7f13\u5b58\u548c\u79bb\u7ebf\u5f00\u53d1\uff0c'install'<\/code>\u7528\u6765\u7f13\u5b58\u6587\u4ef6\uff0c'activate'<\/code>\u7528\u6765\u7f13\u5b58\u66f4\u65b0\uff0c'fetch'<\/code>\u7528\u6765\u62e6\u622a\u8bf7\u6c42\u76f4\u63a5\u8fd4\u56de\u7f13\u5b58\u6570\u636e\u3002\u4e09\u8005\u9f50\u5fc3\uff0c\u6784\u6210\u4e86\u5b8c\u6210\u7684\u7f13\u5b58\u63a7\u5236\u7ed3\u6784\u3002<\/p>\n
    Service Worker\u7684\u517c\u5bb9\u6027<\/h4>\n
    \u684c\u9762\u7aefChrome\u548cFirefox\u53ef\u7528\uff0cIE\u4e0d\u53ef\u7528\u3002\u79fb\u52a8\u7aefChrome\u53ef\u7528\uff0c\u4ee5\u540e\u4f30\u8ba1\u4f1a\u5feb\u901f\u652f\u6301\u3002<\/p>\n
    \u4e09\u3001\u4e86\u89e3Cache\u548cCacheStorage<\/h3>\n
    Cache<\/code>\u548cCacheStorage<\/code>\u90fd\u662fService Worker API\u4e0b\u7684\u63a5\u53e3\uff0c\u622a\u56fe\u5982\u4e0b\uff1a<\/p>\n
    \"cache\u548ccacheStorage\u662fService<\/p>\n
    \u5176\u4e2d\uff0cCache<\/code>\u76f4\u63a5\u548c\u8bf7\u6c42\u6253\u4ea4\u9053\uff0cCacheStorage<\/code>\u548cCache\u5bf9\u8c61\u6253\u4ea4\u9053\uff0c\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u5168\u5c40\u7684caches<\/code>\u5c5e\u6027\u8bbf\u95eeCacheStorage\uff0c\u4f8b\u5982\uff0c\u867d\u7136API\u4e0a\u663e\u793a\u7684\u662fCacheStorage.open()<\/code>\uff0c\u4f46\u6211\u4eec\u5b9e\u9645\u4f7f\u7528\u7684\u65f6\u5019\uff0c\u76f4\u63a5caches.open()<\/code>\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n
    Cache<\/code>\u548cCacheStorage<\/code>\u7684\u51fa\u73b0\u8ba9\u6d4f\u89c8\u5668\u7684\u7f13\u5b58\u7c7b\u578b\u53c8\u591a\u4e86\u4e00\u4e2a\uff1a\u4e4b\u524d\u6709memoryCache\u548cdiskCache\uff0c\u73b0\u5728\u53c8\u591a\u4e86\u4e2aServiceWorker cache\u3002<\/p>\n
    \u81f3\u4e8eCache<\/code>\u548cCacheStorage<\/code>\u5177\u4f53\u7684\u589e\u5220\u6539\u67e5API\u76f4\u63a5\u53bb\u8fd9\u91cc<\/a>\u4e00\u4e2a\u4e00\u4e2a\u627e\uff0cService Worker API\u7684\u77e5\u8bc6\u4f53\u91cf\u5b9e\u5728\u60ca\u4eba\uff0c\u82e5\u60f3\u8981\u7cfb\u7edf\u5b66\u4e60\uff0c\u90a3\u53ef\u8981\u505a\u597d\u5145\u8db3\u7684\u5fc3\u7406\u51c6\u5907\u4e86\u3002<\/p>\n
    \u4f46\u662f\uff0c\u5982\u679c\u6211\u4eec\u53ea\u662f\u5e0c\u671b\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u5e94\u7528\u4e00\u4e24\u70b9\u5b9e\u7528\u6280\u5de7\uff0c\u5219\u8981\u8f7b\u677e\u5f88\u591a\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u5e0c\u671b\u5728\u6211\u4eec\u7684PC\u9879\u76ee\u6216\u8005\u79fb\u52a8\u7aef\u9875\u9762\u4e0a\u6e10\u8fdb\u589e\u5f3a\u652f\u6301\u79bb\u7ebf\u5f00\u53d1\u548c\u66f4\u7075\u6d3b\u7684\u7f13\u5b58\u63a7\u5236\uff0c\u76f4\u63a5\u53c2\u7167\u4e0b\u9762\u7684\u5957\u8def\u5373\u53ef\uff01<\/p>\n
    \u56db\u3001\u501f\u52a9Service Worker\u548ccacheStorage\u79bb\u7ebf\u5f00\u53d1\u7684\u56fa\u5b9a\u5957\u8def<\/h3>\n
      \n
    1. \u9875\u9762\u4e0a\u6ce8\u518c\u4e00\u4e2aService Worker\uff0c\u4f8b\u5982\uff1a\n
      if ('serviceWorker' in navigator) {\n    navigator.serviceWorker.register('.\/sw-demo-cache.js');\n}<\/pre>\n<\/li>\n
    2. sw-demo-cache.js<\/code>\u8fd9\u4e2aJS\u4e2d\u590d\u5236\u5982\u4e0b\u4ee3\u7801\uff1a\n
      var VERSION = 'v1';\n\n\/\/ \u7f13\u5b58<\/span>\nself.addEventListener('install', function(event) {\n  event.waitUntil(\n    caches.open(VERSION).then(function(cache) {\n      return cache.addAll([\n        '.\/start.html',\n        '.\/static\/jquery.min.js',\n        '.\/static\/mm1.jpg'\n      ]<\/span>);\n    })\n  );\n});\n\n\/\/ \u7f13\u5b58\u66f4\u65b0<\/span>\nself.addEventListener('activate', function(event) {\n  event.waitUntil(\n    caches.keys().then(function(cacheNames) {\n      return Promise.all(\n        cacheNames.map(function(cacheName) {\n          \/\/ \u5982\u679c\u5f53\u524d\u7248\u672c\u548c\u7f13\u5b58\u7248\u672c\u4e0d\u4e00\u81f4\n          if (cacheName !== VERSION) {\n            return caches.delete(cacheName);\n          }\n        })\n      );\n    })\n  );\n});\n\n\/\/ \u6355\u83b7\u8bf7\u6c42\u5e76\u8fd4\u56de\u7f13\u5b58\u6570\u636e<\/span>\nself.addEventListener('fetch', function(event) {\n  event.respondWith(caches.match(event.request).catch(function() {\n    return fetch(event.request);\n  }).then(function(response) {\n    caches.open(VERSION).then(function(cache) {\n      cache.put(event.request, response);\n    });\n    return response.clone();\n  }).catch(function() {\n    return caches.match('.\/static\/mm1.jpg');\n  }));\n});<\/pre>\n<\/li>\n
    3. \u628acache.addAll()<\/code>\u65b9\u6cd5\u4e2d\u7f13\u5b58\u6587\u4ef6\u6570\u7ec4\u6362\u6210\u4f60\u5e0c\u671b\u7f13\u5b58\u7684\u6587\u4ef6\u6570\u7ec4\u3002<\/li>\n<\/ol>\n
      \u606d\u559c\u4f60\uff0c\u7b80\u53553\u6b65\u66f2\uff0c\u590d\u5236\u3001\u7c98\u8d34\u3001\u6539\u8def\u5f84\u3002\u4f60\u7684\u7f51\u7ad9\u5df2\u7ecf\u652f\u6301Service Worker\u7f13\u5b58\uff0c\u751a\u81f3\u79bb\u7ebf\u4e5f\u53ef\u4ee5\u81ea\u5982\u8bbf\u95ee\uff0c\u652f\u6301\u5404\u79cd\u7f51\u7ad9\uff0cPC\u548cMobile\u901a\u6740\uff0c\u4e0d\u652f\u6301\u7684\u6d4f\u89c8\u5668\u6ca1\u6709\u4efb\u4f55\u5f71\u54cd\uff0c\u652f\u6301\u7684\u6d4f\u89c8\u5668\u5929\u7136\u79bb\u7ebf\u652f\u6301\uff0c\u60f3\u8981\u66f4\u65b0\u7f13\u5b58\uff0cv1<\/code>\u6362\u6210v2<\/code>\u5c31\u53ef\u4ee5\uff0cso easy!\u3002<\/p>\n
      \u773c\u89c1\u4e3a\u5b9e\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a\u501f\u52a9Service Worker\u548ccacheStorage\u7f13\u5b58\u53ca\u79bb\u7ebf\u5f00\u53d1demo<\/a><\/p>\n
      \u8fdb\u5165\u9875\u9762\uff0c\u6211\u4eec\u52fe\u9009network\u4e2d\u7684Offline\uff0c\u5982\u4e0b\u56fe\uff1a
      \n\"\u52fe\u9009Offline\u793a\u610f\"<\/p>\n
      \u7ed3\u679c\u5237\u65b0\u7684\u65f6\u5019\uff0c\u9875\u9762\u4f9d\u7136\u6b63\u5e38\u52a0\u8f7d\uff0c\u5982\u4e0bgif\u622a\u5c4f\uff1a<\/p>\n
      \"\u79bb\u7ebf\u540e\u9875\u9762\u5237\u65b0\u4f9d\u65e7\u6b63\u5e38\u663e\u793a\"<\/p>\n
      \u6211\u4eec\u79bb\u7ebf\u529f\u80fd\u5c31\u6b64\u8fbe\u6210\uff0c\u51fa\u4e4e\u610f\u6599\u7684\u7b80\u5355\u4e0e\u5b9e\u7528\u3002<\/p>\n
      \u4e94\u3001\u548cPWA\u6280\u672f\u7684\u5173\u7cfb<\/h3>\n
      PWA\u5168\u79f0\u4e3a\u201cProgressive Web Apps\u201d\uff0c\u6e10\u8fdb\u5f0f\u7f51\u9875\u5e94\u7528\u3002\u529f\u6548\u663e\u8457\uff0c\u6536\u76ca\u660e\u663e\uff0c\u5982\u4e0b\u56fe\uff1a<\/p>\n
      \"PWA\u5e94\u7528\u7684\u6536\u76ca\u6570\u636e\"<\/p>\n
      PWA\u7684\u6838\u5fc3\u6280\u672f\u5305\u62ec\uff1a<\/p>\n