How do I write this php array function in JS/jQuery?

Question

This is working great in PHP, how can I accomplish the same in JS/jQuery?

$statsArr['Status'][$s_id]['count'] = ($statsArr['Status'][$s_id]['count'] ?? 0) + 1;

No, I just want to figure out how I can do it in JavaScript with same variable/array names? Does JS/jQuery have something similar to the PHP null coalesce operator? — SeaBass
– SeaBass, Commented Sep 13, 2017 at 1:14
Question already exists stackoverflow.com/questions/6613952/… and stackoverflow.com/questions/476436/… — Johnny Dew
– Johnny Dew, Commented Sep 13, 2017 at 1:17
@JohnnyDew Thanks! Like this? var statsArr['Status'][s_id]['count'] = statsArr['Status'][s_id]['count'] + 1 || 0 It gave me missing ; before statement — SeaBass
– SeaBass, Commented Sep 13, 2017 at 1:29
Possible duplicate of Is there a null-coalescing (Elvis) operator or safe navigation operator in javascript? — stealththeninja
– stealththeninja, Commented Sep 13, 2017 at 2:47

Johnny Dew · Accepted Answer · 2017-09-13 02:49:17Z

1

You have to define each array as an array. Then you won't have the missing ; before statement error.

var s_id = 0;
var statsArr = Array();
statsArr['Status'] = Array();
statsArr['Status'][s_id] = Array();
statsArr['Status'][s_id]['count'] = statsArr['Status'][s_id]['count'] + 1 || 0;
// the result will be 0 since statsArr['Status'][s_id]['count'] was not defined previously

answered Sep 13, 2017 at 2:49

Johnny Dew

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