vue3 el-select 增加全选和取消全选

最近有一个el-option增加全选的需求，后面网上找到了关于vue2的写法，这里我用的是vue3的写法。首先，先上一下效果图

选中和未选中效果图已经上传，现在贴上代码。

全选功能
    
      
      
      
    

const selectedArray = ref([])
const checked = ref(false)
const options = [
  { name: '哈哈哈', label: 'one' },
  { name: '好好好', label: 'tow' },
  { name: '你好', label: 'three' },
  { name: '嘎嘎', label: 'four' },
  { name: '么么么', label: 'five' }
]
const selectAll = () => {
  if (selectedArray.value.length {
      selectedArray.value.push(item.name)
    })
    selectedArray.value.unshift('全选')
  } else {
    selectedArray.value = []
  }
}
const changeSelect = (val) => {
  console.log(val)
  console.log(options,'1231')
  if (!val.includes('全选') && val.length === options.length) {
    selectedArray.value.unshift('全选')
  } else if (val.includes('全选') && (val.length - 1) < options.length) {
    selectedArray.value = selectedArray.value.filter((item) => {
      return item !== '全选'
    })
  }
}
const removeTag = (val) => {
  if (val === '全选') {
    selectedArray.value = []
  }
}