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 in same situation.

Here is thy way to get it done using Lodash or UnderScore library, with one limitation of value to be unique:

var myObject = {
'a': 1,
'b': 2,
'c': 3
}
_.findKey(myObject, function( curValue ) { return myObject.a === curValue });

Plain JavaScript

function getPropAsString( source, value ){
    var keys = Object.keys( source );

    var curIndex,
        total,
        foundKey;

    for(curIndex = 0, total = keys.length; curIndex < total; curIndex++){
        var curKey = keys[ curIndex ];
        if ( source[ curKey ] === value ){
            foundKey = curKey;
            break;
        }
    }

    return foundKey;
}

var myObject = {
'a': 1,
'b': 2,
'c': 3
}
getPropAsString( myObject, myObject.a )

But, I would prefer to fix the code as solution. An example:

var myObject = {
'a': {key:'a', value:1},
'b': {key:'b', value:2},
'c': {key:'c', value:3}
}

console.log( myObject.a.key )