Returning JSON Object in Javascript ES6 [duplicate]

Question

I'm relatively new to ES6 Syntax. I had written a piece of code like follows:

const makeRange = (startTime, endTime) => {
    return { startTime: startTime, endTime: endTime };
};

This worked fine, though I thought I shouldn't need the function braces ({ ...body ...}) for a one line return. The Following code:

const makeRange = (st, et) => { startTime: st, endTime: et };

As pointed by IntelliJ or Webstorm: "Expression Statement is not assignment or call".

How should I do it correctly(if it is valid)?

The { after the => is interpreted as the beginning of a code-block, not the beginning of an object literal, use (st, et) => ({ startTime: st, endTime: et }); for objects — Nick Parsons
– Nick Parsons, Commented Dec 31, 2019 at 4:11
Thanks! When to use return in es6 was helpful too as marked. — Prashant Vishwakarma
– Prashant Vishwakarma, Commented Dec 31, 2019 at 4:19

Tân · Accepted Answer · 2019-12-31 04:10:50Z

10

You can use () to wrap it like this:

const makeRange = (st, et) => ({ startTime: st, endTime: et });

console.log(makeRange(1, 2));

answered Dec 31, 2019 at 4:10

Tân

1

Sign up to request clarification or add additional context in comments.

1 Answer 1