Question

这两个参数都是对象列表。它们都包含属性Name。我想预测一些属性名称相同的属性。以下给出了正确的结果。但是，有人可以帮我重构一次遍历吗？

 export function fieldProjections(docTypeFields, recordFields) {
    const recordsByName = recordFields.reduce(function (rec, field) {
        rec[field.Name] = field;
        return rec;
    }, {});
    const fields = docTypeFields.map(dt => {
        return {
            'Name': dt.Name,
            'RawValue': recordsByName[dt.Name].RawValue,
            'Type': dt.DataType,
            'Value': recordsByName[dt.Name].Value,
            'Id': dt.DocumentTypeFieldID
        };
    });
    return fields;
}

Answer 1

＆＃13;

let docTypeFields = [{Name: 'doc1', RawValue: '8', Type: 'large', Value: '3.50', Id: '1'},{Name: 'doc2', RawValue: '11', Type: 'medium', Value: '4.50', Id: '2'},{Name: 'doc3', RawValue: '81', Type: 'largish', Value: '3.60', Id: '3'},{Name: 'doc4', RawValue: '22', Type: 'small', Value: '2.50', Id: '4'}],
  recordFields = [{Name: 'doc1', Field: 'field1'},{Name: 'doc2', Field: 'field2'},{Name: 'doc3', Field: 'field3'},{Name: 'doc4', Field: 'field4'}];

docTypeFields.forEach(doc => {
    let siblingRecord = recordFields.find(record => record.Name === doc.Name);
    if (siblingRecord) doc.Field = siblingRecord.Field;
});

console.log(docTypeFields);

＆＃13;

如何链接这个reduce和map函数

1 个答案: