Method Shorthand

    /************************************
    Method shorthand in ES6
    ************************************/
    
    let obj = {
        prop1: 123,
        prop2: 'abc',
        prop3: true,
        prop4: function(){
            console.log( obj );
            console.log( this );
        },
        prop5: ()=>{
            console.log( obj );
            console.log( this );
        },
        prop6(){
            console.log( obj )
            console.log( this )
        }
    }
    
    obj.prop6(); // ES6 syntax. Works the same way as obj.prop4()
    obj.prop5(); // the THIS keyword does not work in arrow functions, so this line of code will log out obj, and then log out an empty object