CODE EXAMPLE FOR JAVASCRIPT

check property exists in object javascript

const employee = {
	id: 1,
  	name: "Jhon",
  	salary: 5000
};

const isSalaryExist = "salary" in employee;
console.log(isSalaryExist); //true

const isGenderExist = "gender" in employee;
console.log(isGenderExist); //false