DeviceStorage.freeSpace()
This API is available on Firefox OS for privileged or certified applications only.
Summary
The freeSpace
method is used to get the amount of free space usable by the storage area.
The request's result
is a number representing the amount of free space expressed in Bytes.
Syntax
JavaScript
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var instanceOfDOMRequest = instanceOfDeviceStorage.freeSpace();
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.freeSpace(); 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("You have " + size.toFixed(2) + "GB of free space on your SDCard."); } request.onerror = function () { console.warn("Unable to get the free space available for 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/freespace