What is the reasoning behind declaring certain variables on the same line as others, while most are declared individually on separate lines?

I've taken on the challenge of learning JS by myself and decided to build a Blackjack game. While following a helpful walkthrough online, I encountered some confusion.

On the website, they start by declaring Global variables:

var deck;
var burnCard;

var dealer;
var player = new Array(maxSplits + 1);
var curPlayerHand, numPlayerHands;

var credits, defaultBet;
var creditsTextNode, defaultTextNode;

I understand that you can declare multiple variables on one line, such as var x, y; however, I'm unsure why in this case it's used for some variables but not others. Why is it impossible to do something like

var = deck, burnCard;

for example?

If there's anything important that I've missed, please inform me so I can include it. Thank you.

Answer №1

It's of little consequence to the JavaScript parser.

One could argue that it was done for visual appeal or out of inconsistency/laziness.

Tools like JSLint and ESLint will flag these irregularities for you.

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