1. reactive 制空数组

数组:

 let table= reactive([
      {
        id: 1,
        name: '哪吒'
      },
      {
        id: 2,
        name: '郭源潮'
      }
  ])

制空:
goodList.length = 0;

2.ref 制空数组

数组:

let goodList = ref([
      {
        id: 1,
        name: '哪吒'
      },
      {
        id: 2,
        name: '郭源潮'
      }
  ])

制空:
goodList.value.length = 0;
goodList.value = [];

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