javascript Bracket notation syntax

Asked Jun 16 '14 at 19:45

Active Jun 16 '14 at 19:45

Viewed 46 times

Is there a better way to write that :

var modifier = {};
modifier[rowId + '.' + columnName] = value;

I can't use the following as it only accepts a constant for the first part.

modifier = { rowId + '.' + columnName : value}

Thanks.

asked Jun 16 '14 at 19:45

Nicolas

4

That is the only way. – Niet the Dark Absol Jun 16 '14 at 19:46
I'm just gratefull for the former. It's neat in contrast to other languages. – Joseph Dailey Jun 16 '14 at 19:49
@NiettheDarkAbsol There's always evil `eval` :) – Oriol Jun 16 '14 at 19:50
`eval("modifer = { " + rowId + '.' + columnName + " : value}")` – Fabricator Jun 16 '14 at 19:51
Ok thanks, I don't like neither the eval syntax but so will keep the above syntax. – Nicolas Jun 16 '14 at 19:53
I think ECMAScript 6 should be getting expressions for object initializer keys. – cookie monster Jun 16 '14 at 19:53
1

Yep, looks like it is in the current spec draft. You'll be able to do `var modifier = {[rowId + '.' + columnName] : value}` – cookie monster Jun 16 '14 at 19:58

0 Answers0