What are the methods of custom commands (V-check and V-focus)? What hook functions does it have? What other hook function arguments are there?

Global definition directive:

The directive method of a Vue object takes two arguments, the name of the directive and the function. Component built-in directives: DirectivesCopy the code

Hook functions:

Inserted (a node is inserted) 3, Update (a related update within the component)Copy the code

Hook function arguments:

El, bindingCopy the code