循环遍历对象键并将字符串附加到键

Question

我有一个配置对象。使用这个config对象，我通过在这个对象的键上附加一个字符串来填充必需的元素。我需要更新值的帮助

const MEMBER_INITIAL_VALUE = {
  type: '',
  dateOfBirth_: '',
  seekingCoverage_: true,
  relationshipToPrimary: ''
}; 

const updateInitialValue = (type, relationshipToPrimary) => { 
  var newMemberObjValue = JSON.parse(JSON.stringify(MEMBER_INITIAL_VALUE));
  let updateValue =  Object.entries(newMemberObjValue).forEach(([key, value]) => {
      [`${key}_${type}`]: value; //I'm stuck here. not sure how to proceed
      delete key;

  });
  return updateValue;
};

updateInitialValue = ('applicant', 'SELF');
updateInitialValue = ('spouse', 'DEPENDANT');

{
  type: 'applicant',
  dateOfBirth_applicant: '',
  seekingCoverage_applicant: true
  relationshipToPrimary: 'SELF'
}; 
{
  type: 'spouse',
  dateOfBirth_spouse: '',
  seekingCoverage_spouse: true
  relationshipToPrimary: 'DEPENDANT'
};

Answer 1

这应该起作用：

null

const MEMBER_INITIAL_VALUE = {
  type: '',
  dateOfBirth_: '',
  seekingCoverage_: true,
  relationshipToPrimary: ''
};

const updateInitialValue = (type, relationshipToPrimary) => {
    let newMemberInitialValue = JSON.parse(JSON.stringify(MEMBER_INITIAL_VALUE));
  Object.keys(newMemberInitialValue).forEach((key) => {
    if(!['type', 'relationshipToPrimary'].includes(key)) {
        newMemberInitialValue[`${key}_${type}`] = newMemberInitialValue[key];
     delete newMemberInitialValue[key];
    }
  });
  newMemberInitialValue.type = type;
  newMemberInitialValue.relationshipToPrimary = relationshipToPrimary;
  console.log(newMemberInitialValue);
};

let applicantValues = updateInitialValue('applicant', 'SELF');
let spouseValues = updateInitialValue('spouse', 'DEPENDANT');

Answer 2

由于您不是在更新原始对象,因此可以对此进行极大的简化：

const MEMBER_INITIAL_VALUE = {
  type: '',
  dateOfBirth_: '',
  seekingCoverage_: true,
  relationshipToPrimary: ''
};

const updateInitialValue = (type, relationshipToPrimary) => ({
  type,
  relationshipToPrimary,
  [`dateOfBirth_${type}`]: MEMBER_INITIAL_VALUE.dateOfBirth_,
  [`seekingCoverage_${type}`]: MEMBER_INITIAL_VALUE.seekingCoverage_
});

let updatedValue = updateInitialValue('applicant', 'SELF');
updatedValue = updateInitialValue('spouse', 'DEPENDANT');