revert( )
Reverts the current item to its saved value.
Description
The revert()
function returns a Promise that is resolved
when:
- The current item is reverted to its saved state in the collection.
- Any connected page elements have been updated with the current item’s old values (read & write mode) or blank values (write-only mode).
Calling revert()
on a read-only dataset causes the Promise to reject.
Note:
A dataset needs to load its data before you call its
revert()
function. Usually a dataset finishes loading a short time after the page it is on finishes loading. So if you callrevert()
inside the page’sonReady()
event handler, the dataset might not be ready yet.To call
revert()
as soon as possible after a page loads, use the dataset'sonReady()
function inside the page’sonReady()
event handler to ensure that both the page and the dataset have finished loading.
Syntax
function revert(): Promise<void>
revert Parameters
This function does not take any parameters.
Returns
Fulfilled - When the item has been reverted to its saved state. Rejected - An error message.
Return Type:
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1$w("#myDataset").revert()2 .then( () => {3 console.log("Done reverting the item");4 } )5 .catch( (err) => {6 let errMsg = err;7 } );
1$w.onReady( () => {2 $w("#myDataset").onReady( () => {3 $w("#myDataset").revert()4 .then( () => {5 console.log("Done reverting the item");6 } )7 .catch( (err) => {8 let errMsg = err;9 } );1011 } );1213} );