How to get first true value of an object and return the corresponding key?

Question

I have an object as :

var myObj = {called: false, invited: true, interviewed: false, offer: false}

How can I find the first value that is true and then return the corresponding key ?

I want to create a function that, given an object that is always the same structure, returns me the key of the first true value.

Do you know that the property collection is not ordered ? If you are expecting a rules of priority there, it will not works. — JardonS
– JardonS, Commented Aug 2, 2019 at 14:04

mhlavacka · Accepted Answer · 2020-10-24 23:31:43Z

3

Here is a simpler solution to the question

const myObj = {called: false, invited: true, interviewed: false, offer: false};


const getFirstTruthyItem = (obj) => Object.keys(obj).find((i) => obj[i] === true);

console.log(getFirstTruthyItem(myObj));

answered Oct 24, 2020 at 23:31

mhlavacka

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1 Comment

Håvard Malm Geithus Over a year ago

In JavaScript, it's bit misleading to name the function getFirstTruthyItem as you're strictly comparing with the keyword true. The context being that "truthy" has a wider meaning than === true in JavaScript.

Ramkumar Khubchandani · Accepted Answer · 2022-10-20 09:44:42Z

2

Let me try to make more simpler.

const myObj = {called: false, invited: true, interviewed: false, offer: false};

console.log(Object.keys(myObj).find(key => myObj[key])) // Output: invited

answered Oct 20, 2022 at 9:44

Ramkumar Khubchandani

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Comments

Vasyl Butov · Accepted Answer · 2019-08-02 14:01:20Z

1

const myObj = {called: false, invited: true, interviewed: false, offer: false};

const getTrueKey = obj => {
  for (const key in obj) {
    if (obj[key]) return key;
  };
  return undefined;
};

console.log(getTrueKey(myObj));

answered Aug 2, 2019 at 14:01

Vasyl Butov

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Dominik Matis · Accepted Answer · 2019-08-02 14:00:17Z

1

for(let key in myObj) {
    if(myObj[key]) return key;
}

answered Aug 2, 2019 at 14:00

Dominik Matis

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