{"id":4262,"date":"2015-10-26T12:04:35","date_gmt":"2015-10-26T04:04:35","guid":{"rendered":"https:\/\/sdeno.com\/?p=4262"},"modified":"2015-10-26T12:04:35","modified_gmt":"2015-10-26T04:04:35","slug":"localforage-js-%e6%9c%ac%e5%9c%b0%e5%ad%98%e5%82%a8","status":"publish","type":"post","link":"https:\/\/sdeno.com\/?p=4262","title":{"rendered":"localforage.js - \u672c\u5730\u5b58\u50a8"},"content":{"rendered":"<p><a href=\"https:\/\/sdeno.com\/?p=3482\" target=\"_blank\">\u6570\u636e\u672c\u5730\u5b58\u50a8Cookies\u3001LocalStorage\u548cIndexedDB<\/a><\/p>\n<p><a href=\"https:\/\/sdeno.com\/?p=3477\" target=\"_blank\">web storage\u548ccookie\u533a\u522b\u4ee5\u53castore.js\u4f7f\u7528<\/a><\/p>\n<p>localStorage \u80fd\u591f\u8ba9\u4f60\u5b9e\u73b0\u57fa\u672c\u7684\u6570\u636e\u5b58\u50a8\uff0c\u4f46\u5b83\u7684\u901f\u5ea6\u6162\uff0c\u800c\u4e14\u4e0d\u80fd\u5904\u7406\u4e8c\u8fdb\u5236\u6570\u636e\uff0c\u662f\u540c\u6b65\u7684\u4e0d\u80fd\u5f02\u6b65\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>IndexedDB \u548c WebSQL \u662f\u5f02\u6b65\u7684\uff0c\u901f\u5ea6\u5feb\uff0c\u652f\u6301\u5927\u6570\u636e\u96c6\uff0c\u4f46\u4ed6\u4eec\u7684API \u4f7f\u7528\u8d77\u6765\u6709\u70b9\u590d\u6742\u3002\u4e0d\u4ec5\u5982\u6b64\uff0cIndexedDB \u548c WebSQL \u6ca1\u6709\u88ab\u6240\u6709\u7684\u4e3b\u6d41\u7684\u6d4f\u89c8\u5668\u5382\u5546\u652f\u6301\uff0c\u8fd9\u79cd\u60c5\u51b5\u6700\u8fd1\u4e5f\u4e0d\u592a\u53ef\u80fd\u6539\u53d8\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>localForage \u662f\u4e00\u4e2a\u4f7f\u7528\u975e\u5e38\u7b80\u5355\u7684 JavaScript \u5e93\u7684\uff0c\u63d0\u4f9b\u4e86 get\uff0cset\uff0cremove\uff0cclear \u548c length \u7b49\u7b49 API\uff0c\u8fd8\u5177\u6709\u4ee5\u4e0b\u7279\u70b9\uff1a<\/p>\n<p>\u652f\u6301\u56de\u8c03\u7684\u5f02\u6b65 API\uff1b<br \/>\n\u652f\u6301 IndexedDB\uff0cWebSQL \u548c localStorage \u4e09\u79cd\u5b58\u50a8\u6a21\u5f0f\uff08\u81ea\u52a8\u4e3a\u4f60\u52a0\u8f7d\u6700\u4f73\u7684\u9a71\u52a8\u7a0b\u5e8f\uff09\uff1b<br \/>\n\u652f\u6301 BLOB \u548c\u4efb\u610f\u7c7b\u578b\u7684\u6570\u636e\uff0c\u8ba9\u60a8\u53ef\u4ee5\u5b58\u50a8\u56fe\u7247\uff0c\u6587\u4ef6\u7b49\u7b49\u3002<br \/>\n\u652f\u6301 ES6 Promises\uff1b<\/p>\n<p>&nbsp;<\/p>\n<p>\u4f7f\u7528\u65b9\u6cd5<\/p>\n<pre> &lt;script src=\"localforage.js\"&gt;&lt;\/script&gt;\r\n &lt;script&gt;\r\n localforage.setItem('user_1_photo', '123').then(function(photo) {\r\n    alert(photo); \/\/\u540c\u65f6\u8bbe\u7f6e\u597d\u6570\u636e\u6210\u529f\u540e\uff0c\u83b7\u53d6\u6570\u636e\u5e76\u56de\u8c03\r\n });\r\n \r\n \/\/\u6216\u8005\r\n \r\n localforage.getItem('user_1_photo').then(function(photo) {\r\n    console.log(photo); \/\/\u5148\u83b7\u53d6\u5230\u6570\u636e\u6210\u529f\u540e\u56de\u8c03\r\n });\r\n &lt;\/script&gt;<\/pre>\n<p>&nbsp;<\/p>\n<p>\u63d0\u793a\uff1a\u5904\u7406\u5c0f\u6570\u636e\u5e76\u4e14\u662f\u5b57\u7b26\u4e32\u8bdd\u4f7f\u7528localStorage\u548csessionStorage\u5c31\u53ef\u4ee5\u4e86\uff0clocalforage.js\u90fd\u53ef\u4ee5\u4e34\u65f6\u7f13\u5b58MP3\u6570\u636e\u5927\u5c0f\u3002<\/p>\n<p><a href=\"http:\/\/pan.baidu.com\/s\/1ntzU6LF\" target=\"_blank\">http:\/\/pan.baidu.com\/s\/1ntzU6LF<\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6570\u636e\u672c\u5730\u5b58\u50a8Cookies\u3001LocalStorage\u548cIndexedDB web storage\u548ccookie [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-4262","post","type-post","status-publish","format-standard","hentry","category-11"],"_links":{"self":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/posts\/4262","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4262"}],"version-history":[{"count":0,"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/posts\/4262\/revisions"}],"wp:attachment":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4262"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4262"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4262"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}