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Vue.js 3 Progressive Framework Tutorial• 6 min read
Component Props & defineEmits
Pass data downward via typed defineProps and communicate upward to parent components with defineEmits.
Unidirectional Data Flow
Props flow down from parent to child. When a child needs to notify the parent, it emits an event via const emit = defineEmits(["update"]).
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Test Yourself With Exercise
Can a child component directly reassign or mutate props received from its parent?