javascript - Is a function return value possible as an array key? -

i made lazy utility function wanted pass arrays key getting syntax errors, possible pass function inside array it's key?

function encloseattrselector(attr, value) {     return '[' + attr + '="' + value + '"]'; }

example (typically more 1 pair):

var data = { encloseattrselector('name', 'username'):  row.first().text() };

in ~~es6~~ es2015 (the newest official standard language) yes, in real-life contexts no. can this:

var data = {}; data[encloseattrselector('name', 'username')] = row.first().text();

the new es2015 syntax is:

var data = { [encloseattrselector('name', 'username')] : row.first().text() };

that is, square brackets around property name in object initializer expression. inside square brackets can expression.

Brant