How to get an Key value pair from a array of objects in angular-CodePudding

Sample array of objects:

{"29": "DTE Queue", "30": "Services Reporting Sales", "31": "Services Reporting Ops", "41": "UPLOAD", "55": "Support Report"}.

I'm getting input from user as 'sup'. Then output should be {"55": "Support Report"}.

function getKeyByValue(object, value) {
  return Object.keys(object).find((key) => object[key] === value);
}

CodePudding user response：

You can convert the object to an array of entries, find the entry and convert it back to an object:

const obj = {"29": "DTE Queue", "30": "Services Reporting Sales", "31": "Services Reporting Ops", "41": "UPLOAD", "55": "Support Report"};

function getObjectByValue(object, value) {
  try {
    return Object.fromEntries([Object.entries(object).find(([key, val]) => val.toLowerCase().includes(value.toLowerCase()))]);
  } catch (err) {
    console.error('Object not found');
    return {};
  }
}

console.log(getObjectByValue(obj, 'sup'));
console.log(getObjectByValue(obj, 'sup2'));

CodePudding user response：

You can use Object.entries() and Object.fromEntries() for the result you are expecting:

const obj = {
  "29": "DTE Queue",
  "30": "Services Reporting Sales",
  "31": "Services Reporting Ops",
  "41": "UPLOAD",
  "55": "Support Report"
};

function getKeyByValue(object, value) {
  const res = Object.entries(object).find((arr) => arr.includes(value));
  if (res) {
    return Object.fromEntries([res]);
  }
}

console.log(getKeyByValue(obj, 'Support Report'));

CodePudding user response：

const obj = {
  "29": "DTE Queue",
  "30": "Services Reporting Sales",
  "31": "Services Reporting Ops",
  "41": "UPLOAD",
  "55": "Support Report"
};

console.log(getKeyByValue(obj, 'sup'))

function getKeyByValue(obj, value) {
  const matchedEntry = Object.entries(obj).find(entry => entry[1].toLowerCase().match(value.toLowerCase()));

  return matchedEntry && Object.fromEntries([matchedEntry])
}