DeviceStorage.usedSpace()
This API is available on Firefox OS for privileged or certified applications only.
Summary
The usedSpace
method is used to get the total of space used by the storage (the amount of space filled by files).
The request's result
is a number representing the amount of available space expressed in Bytes.
Syntax
JavaScript
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var instanceOfDOMRequest = instanceOfDeviceStorage.usedSpace();
Returns
It returns a DOMRequest
object to handle the success or error of the operation.
Example
JavaScript
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var sdcard = navigator.getDeviceStorage("sdcard");</code><code class="language-js"> var request = sdcard.usedSpace(); request.onsuccess = function () { // The result is expressed in bytes, let's turn it into Gigabytes var size = this.result / Math.pow(10,9); console.log("The files on your SDCard take " + size.toFixed(2) + "GB of space."); } request.onerror = function () { console.warn("Unable to get the space used by the SDCard: " + this.error); }
Specification
Not part of any specification.
See also
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/devicestorage/usedspace