When you comparing object with another object with same property why it returns false?
For Example
var person={
age:30
}
var person2={
age:40
}
console.log(person==person) or console.log(person===person)
it show's in console false why?
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Did you mean that `person == person2` returns false? `person == person` will always return true. – Wais Kamal Sep 26 '18 at 13:57
2 Answers
2
Objects are reference types, which means the equality operators operate on a reference to the object in memory, not to its contents.
In your particular case, you could serialize the object to a string and then check
const compareSerializableObjects = (a, b) =>
JSON.stringify(a) === JSON.stringify(b)
Benny Powers
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1You could also check the individual property that you care about. Those are value types so person.age === person.age – Keith Rousseau Sep 26 '18 at 13:55
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person === person will always return true as you are comparing the same reference, and if you are comparing person === person2 then it is a different refference which is false. Did you mean person.age === person2.age ?
Marek Panti
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