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LocalForage setDriver Looper
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| var localForageDriverOrder = [localforage.INDEXEDDB, localforage.LOCALSTORAGE, localforage.WEBSQL]; | |
| var setDriverPromise = new Promise(function(resolve, reject) { | |
| var drivers = localForageDriverOrder.slice(); | |
| var crntDriverPromise = Promise.resolve(); | |
| crntDriverPromise.then(driversPromiseLoop); | |
| function driversPromiseLoop(){ | |
| var driver = null; | |
| while (driver = drivers.shift()) { | |
| if (localforage.supports(driver)) { | |
| crntDriverPromise = localforage.setDriver(driver); | |
| return crntDriverPromise.then(function(){ | |
| resolve(); | |
| }).catch(driversPromiseLoop); | |
| } | |
| } | |
| reject('No driver'); | |
| } | |
| }); |
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