get null property of object if not exists js

Gabriel Metre Resende answered on December 31, 2022 Popularity 4/10 Helpfulness 1/10

answer get null property of object if not exists js

get null property of object if not exists js

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const d1 = {
  A: () => { return "A"; },
  B: () => { return "B"; },
  C: () => { return "C"; },
  Z: undefined,
};

const d2 = {
  A: () => { return "A"; },
  B: () => { return "B"; },
  C: () => { return "C"; },
};

const key = "Z";

function getValue(obj, key) {
  return obj.hasOwnProperty(key) ? obj[key] : null;
}

const func1 = getValue(d1, key);
console.log(func1);

const func2 = d1[key] || null;  // Shouldn't use
console.log(func2);

const func3 = d1[key] ?? null;  // Shouldn't use
console.log(func3);
 Run code snippet

Popularity 4/10 Helpfulness 1/10 Language javascript

Source: stackoverflow.com

Tags: get javascript not-exists null object

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Contributed on Dec 31 2022

Gabriel Metre Resende

0 Answers Avg Quality 2/10

get null property of object if not exists js

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