Sys.Component beginUpdate Method
Called by the create method to indicate that the process of setting properties of a component instance has begun.
aComponent.beginUpdate();
Remarks
The beginUpdate method sets the isUpdating property of the current Component object to true. Component developers can override the beginUpdate method in a derived class to add custom update logic.
This method is called by the create method ($create).
See Also
Tasks
Creating Custom Non-Visual Client Components
Concepts
Creating a Client Component Class Using the Prototype Model