The main methods of communication between Vue components are: 1. Parent-child component communication (props, emit); 2. Sibling component communication (EventBus, Vuex); 3. Global event bus ($root, $listeners); 4. Custom events ($emit, $on); 5. Provide and Inject (provide, inject). Choosing the most appropriate communication method depends on the specific situation and communication granularity.
Vue inter-component communication
In Vue, inter-component communication is crucial, it enables components to communicate with each other Pass data and trigger events. There are mainly the following ways to implement inter-component communication:
1. Parent-child component communication
- props:Parent component to child component Pass data, read only.
- emit: The child component sends events to the parent component.
2. Sibling component communication
- EventBus: Create a central event bus through which components can register and trigger event.
- Vuex: Using a centralized state management system, components can store and access shared data.
3. Global event bus
- $root: Access to the root component, you can trigger and listen for events.
- $listeners: Listen events in the root component, triggered by other components.
4. Custom events
- $emit: Register and trigger custom events, which can be between components Pass data and trigger callbacks.
- $on: Listen to custom events and execute callbacks when triggered.
5. Provide and Inject
- provide: Provide data in the parent component, and the child component can access it through injection .
- inject: Inject dependencies provided by the parent component into the child component.
Choose the most appropriate communication method:
Selecting the most appropriate communication method depends on the specific situation. For parent-child component communication, props and emit are great. For sibling components or cross-level communication, EventBus or Vuex may be more suitable. Custom events and Provide/Inject are suitable for more flexible and customizable communication scenarios.
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