Javascript challenge

var objs = []; // we'll store the object references in this array

function walkTheObject( obj ) {
    var keys = Object.keys( obj ); // get all own property names of the object

    keys.forEach( function ( key ) {
        var value = obj[ key ]; // get property value

        // if the property value is an object...
        if ( value && typeof value === 'object' ) {

            // if we don't have this reference...
            if ( objs.indexOf( value ) < 0 ) {
                objs.push( value ); // store the reference
                walkTheObject( value ); // traverse all its own properties
            }

        }
    });
}

walkTheObject( this ); // start with the global object

document.getElementById('mail').value
> "[email protected]"

const someObject = {
    key1: 'woo',
    key2: 'hoo',
};

const someString = JSON.stringify(someObject, null, 2);

console.log(someString);