js把筛选对象字符串

Question

const arr = {
  fields: {
    market: {
      data: [
        { name: 'isHk', value: true},
        { name: 'isOvs', value: false },
      ],
    },
  },
};

要求是：在market中的data里的value筛选出value是true的，只要data里的value有一个是true，就返回'market'这个字符串，如果data里都是false，则返回空

Answer 1

<script>
    const arr = {
        fields: {
            market: {
                data: [
                    { name: 'isHk', value: true },
                    { name: 'isOvs', value: false },
                ],
            },
        },
    };
    var value = arr.fields.market.data.filter(i => i.value === true).length ? 'market' : ''
    alert(value)
</script>