Call Apex Methods
Lightning web components can import methods from Apex classes. The imported methods are functions that the component can call either via @wire
or imperatively.
Before you use an Apex method, make sure that there isn’t an easier way to get the data, for example, using a base Lightning component. See Data Guidelines.
Assume that Apex methods provision immutable data, even if it's possible to mutate the data today. It's a best practice to treat all data that a component receives as immutable. To mutate the data, make a shallow copy of the objects you want to mutate. It’s important to understand this concept when working with data. See Data Flow.
The lwc-recipes repo has several components that call Apex methods. Look for components whose names start with apex
.
Apex limits are applied per invocation of an Apex method. If your JavaScript code invokes multiple Apex methods via @wire
or imperatively, the Apex limits are applied separately to each method call.
See Also