watch

1、基本用法

import { defineProps, watch } from "vue";

const props = defineProps({
  data: {
    type: Object,
    default: {},
  },
});

// 两种写法都可以
watch(() => props.data, (newValue, oldValue) => {
  
},{ deep: true, immediate: true })

watch(props.data, (newValue, oldValue) => {
  
},{ deep: true, immediate: true });