Javascript - Cannot understand this line of code

Question

var statusCodes = {};

statusCodes[exports.ACCEPTED = 202] = "Accepted";

what does the second line mean? More specifically, the part in the squared brackets.

It's just an assignment. Assignments return the value assigned, so it's equivalent to `exports.ACCEPTED = 202` and `statusCodes[202]`. — jonrsharpe, Jul 02 '20 at 16:05

score 1 · Accepted Answer · answered Jul 02 '20 at 16:06

Complex things are made of multiple simple things. Just look at it one operation at a time.

First this operation is performed:

exports.ACCEPTED = 202

Which sets exports.ACCEPTED to the value 202, and the operation evaluates to the value 202. Then this operation is performed:

statusCodes[202] = "Accepted"

Which sets statusCodes[202] to the value "Accepted".

score 0 · Answer 2 · answered Jul 02 '20 at 16:05

0

It's just a shorter version for

var statusCodes = {};
exports.ACCEPTED = 202;
statusCodes[exports.ACCEPTED] = "Accepted";

Check this question to get the idea

answered Jul 02 '20 at 16:05

Ximik

2 Answers2