Created
February 8, 2018 15:39
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| function isPrivate() { | |
| return new Promise(function (resolve) { | |
| const on = function () { return resolve(true); }; // is in private mode | |
| const off = function () { return resolve(false); }; // not private mode | |
| const testLocalStorage = function () { | |
| try { | |
| if (localStorage.length) off(); | |
| else { | |
| localStorage.x = 1; | |
| localStorage.removeItem('x'); | |
| off(); | |
| } | |
| } catch (e) { | |
| // Safari only enables cookie in private mode | |
| // if cookie is disabled then all client side storage is disabled | |
| // if all client side storage is disabled, then there is no point | |
| // in using private mode | |
| navigator.cookieEnabled ? on() : off(); | |
| } | |
| }; | |
| if ('MozAppearance' in document.documentElement.style) { | |
| const db = indexedDB.open('test'); | |
| db.onerror = on; | |
| db.onsuccess = off; | |
| return void 0; | |
| } | |
| if (navigator.userAgent.indexOf('Safari') && /Version\/10/gi.test(navigator.userAgent)) { | |
| return testLocalStorage(); | |
| } | |
| // others | |
| return off(); | |
| }); | |
| } | |
| // Example.. | |
| // isPrivate().then(function (isPrivate) { | |
| // console.log('Is in private mode: ', isPrivate); | |
| // }); |
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