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What is asynchronous validation?
Synchronous and asynchronous Validators are very similar – the main difference is that a sync Validator returns an error object instance directly, while the async version returns an Observable of the the same object. The most common use case for async Validators is doing a server validation via an HTTP Callback.
What is the difference between synchronous and asynchronous functions?
In synchronous operations tasks are performed one at a time and only when one is completed, the following is unblocked. In other words, you need to wait for a task to finish to move to the next one. In asynchronous operations, on the other hand, you can move to another task before the previous one finishes.
When would you use asynchronous actions?
Asynchronous actions are best when your method is I/O, network-bound, or long-running and parallelizable. Another benefit of an asynchronous action is that it can be more easily canceled by the user than a synchronous request.
Which is an example of a synchronous validation?
Synchronous validation example: Asynchronous validation example: Synchronous validation is used for simple validation logic that is performed on the client without a remote service call. Please see the details of how to implement this here.
How to show asynchronous validation in AG-grid?
The GIF below is showing the synchronous validation sample. See GIF below showing asynchronous validation displaying a spinner icon during validation: As you see in the sample above, ag-Grid has 3 columns that have input validation logic. If the input is valid, we will display a green tick mark next to the corresponding value column.
When to change valuesetter behavior in AG-grid?
Whenever a user edits an ag-grid cell, a valueSetter gets called with the new and the old value in its parameters. We will modify the default valueSetter behavior to validate the input and then set the value using a transaction update. Essentially we’re replacing the default valueSetter logic with a transaction update.