Get object property name as a string

Question

Is it possible to get the object property name as a string

person = {};
person.first_name = \'Jack\';
person.last_name = \'Trades\';
person.address = {};
per         


        

Answer 1

I am late to the party but I took a completely different approach, so I will throw in my approach and see what the community thinks.

I used Function.prototype.name to do what I want. my properties are functions that when called return the value of the property, and I can get the name of the property (which is a function) using .name

Here is an example:

person = {
    firstName(){
        return 'John';
    },
    address(){
        return '123 street'
    }
}

person.firstName.name // 'firstName'
person.address.name // 'address'

Note:
you can't easily change the value of a property (e.g firstname) at run time in this case. you would need to create a function (.name would be anonymous in this case) and this function would return a new named function which return the new value:

// note the () at the end     
person.firstName = new Function('', 'return function firstName(){return "johny"}')(); 
person.firstName.name ; // 'firstName' 
person.firstName(); // 'johny'