It's a bit of a challenge because there doesn't seem to be an "IsBusy" function specifically designed for use with localForage or IndexedDB. However, a custom solution can be created to determine if a particular operation has been completed. This approach can even serve as a comprehensive monitor for all asynchronous operations in localForage.
Here is an illustrative example:
function cbFunc(err, value) {
// Execute this code once the value has been
// retrieved from the offline storage.
console.log(value);
DBWrapper.numCurrOps--;
if (DBWrapper.numCurrOps === 0)
DBWrapper.isBusy = false;
}
var DBWrapper = {
isBusy: false,
numCurrOps: 0,
getItem: function(key, cbFunc){
DBWrapper.isBusy = true;
DBWrapper.numCurrOps++;
localforage.getItem('somekey', cbFunc);
}
};
This code snippet showcases a wrapper that aids in determining if there are any ongoing async operations that have not yet concluded in the background. Additional functions can be incorporated into the singleton object to modify the "isBusy" attribute accordingly.