v-model creates two-way binding between parent and child. Combines prop and event. Component must emit update:modelValue event. Support custom v-model modifiers.
Define prop types, required status, default values. Use validator functions. Handle prop constraints. Support type checking. Example: prop: { type: String, required: true }.
Watch props for changes. Handle prop updates. Support reactive props. Implement update logic. Example: watch(() => props.value).
Test component interaction. Handle event testing. Support prop testing. Implement test utilities. Handle test scenarios.
Create complex communication systems. Handle advanced scenarios. Support pattern composition. Implement advanced strategies.
Handle secure communication. Implement data protection. Support security patterns. Handle sensitive data. Implement security measures.
Create comprehensive documentation. Generate API docs. Support example usage. Implement documentation systems.
Use $emit method or defineEmits to send events to parent components. Parents listen with v-on or @. Support event arguments. Example: emit('update', value) or this.$emit('update', value).
Provide/inject enables dependency injection between components. Parent provides data/methods, descendants inject them. Works across component layers. Alternative to prop drilling.
Slots pass template content to child components. Support default and named slots. Enable component composition. Pass data back through scoped slots.
Define methods using defineExpose. Access through template refs. Handle method calls. Support method parameters. Example: defineExpose({ method }).
Transform props before use. Handle computed props. Support prop formatting. Implement transformation logic. Handle prop updates.
Design scalable communication systems. Handle system organization. Support architecture patterns. Implement design principles.
attrs contains non-prop attributes passed to component. Access via $attrs or useAttrs(). Handle attribute inheritance. Support fallthrough attributes.
Pass data to slot content. Access slot props. Handle slot scope. Support slot defaults. Example: v-slot='slotProps'.
Define injection types. Handle type safety. Support type inference. Implement type validation. Handle type errors.
Props are custom attributes for passing data from parent to child components. Defined using props option or defineProps. Support type checking, default values, and validation. Example: defineProps(['title']) or props: { title: String }.
Refs provide direct access to child component instances. Use template ref attribute and ref(). Access methods and properties. Handle component communication.
Modifiers customize event handling. Include .prevent, .stop, .once. Chain multiple modifiers. Support custom modifiers. Example: @click.prevent.stop.
Create centralized event bus for component communication. Handle event subscription. Support event broadcasting. Implement event patterns.
Use promises or async/await. Handle loading states. Support error handling. Implement async patterns. Handle response handling.
