接受对象并从该对象返回title属性值的javascript函数

Question

I have a study item that states: Write a function bestShow that accepts an object and returns the value of the title property from that object.

Hint provided: console.log(bestShow({ genre: 'comedy', title: 'Seinfeld' })); //Should print: Seinfeld

I've tried so many different things. Here is one iteration, where I finally gave up.

function bestShow(genre, title)
{
this.genre =  genre;
this.title = title;
}
var show = new bestShow(‘comedy’, ‘Seinfeld’);
console.log(show.bestShow.title);

Answer 1

This ES6 fat arrow function will do:

let title = (data) => data.title;

Pre ES6 version :

We will define a function, which accepts {genre: "comedy", title: "Sienfeld"} which is in-turn a valid JS object with properties genre and title . So all that is left there to do is to return the value of title property of our data parameter. Then we are just calling our function and using the result as an input for console.log .

function title(data) {
 return data.title;
}
console.log(title({ genre: 'comedy', title: 'Seinfeld' }));

Answer 2

Why all this! Look it's so simple !

function bestShow(obj) {
    return obj.title; 
}

Answer 3

Got it!

var bestShow = new Object();
    bestShow. genre = 'comedy';
    bestShow. title = 'Seinfeld';
console.log(bestShow.title);