Answers for "js object has key"

17

how to check if object has key javascript

myObj.hasOwnProperty('key') // it checks object for particular key and not on prototype
Posted by: Guest on March-28-2020
1

js object contain key

if ('key' in myObj)
// better
if (!myObj.hasOwnProperty('key'))
Posted by: Guest on December-28-2020
4

typescript check if object has key

if ('key' in myObj)
Posted by: Guest on June-21-2020
3

javascript if object has key

if('key' in object)
Posted by: Guest on March-22-2021
2

hasOwnProperty

The hasOwnProperty() method returns a boolean indicating whether the object has the specified property as its own property (as opposed to inheriting it).

const object1 = {};
object1.property1 = 42;

console.log(object1.hasOwnProperty('property1'));
// expected output: true

console.log(object1.hasOwnProperty('toString'));
// expected output: false
Posted by: Guest on December-21-2020
2

check object has key javascript

Object.prototype.hasOwnProperty()
Posted by: Guest on January-18-2021

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