How can I get firstName in this code

Question

let grammarcorrah = {
firstName: 'Grammar',
lastName: 'Corrah'
}

function checkFunc()
{
for (let element in grammarcorrah)
{
document.getElementById("demo1").innerHTML = element;
}
}

https://code.sololearn.com/WduGP0uCQux1/?ref=app

Answer 1

You are replacing firstName with lastName by loop. Just use like this:

let grammarcorrah = {
firstName: 'Grammar',
lastName: 'Corrah'
}

function checkFunc() {
document.getElementById("demo1").innerHTML = grammarcorrah.firstName;
document.getElementById("demo2").innerHTML = grammarcorrah.lastName;

}

//document.getElementById("demo1").innerHTML = grammarcorrah['firstName']; // index method

Answer 2

grammercorrah.firstName
grammercorrah['firstName']

Answer 3

Thank you my _black belt coders_ for your help