Should aria-expanded attribute take the value true or string “true”?

Question

I am setting the aria-expanded attribute's value with jquery. I am confused whether I should do:

$(".dropdown-toggle").attr("aria-expanded", true);

or

$(".dropdown-toggle").attr("aria-expanded", "true");

Should true be treated as a string or simply a javascript data type?

Answer 1

We can use both way to set aria-expanded attribute. Both will set attribute correctly.

$(".dropdown-toggle").attr("aria-expanded", "true");
$(".dropdown-toggle").attr("aria-expanded", true);

Normally first option is used but we can use both.