https://gist.github.com/1427331
function makeNonEnumerable(obj /*, props */) {
var names = [].slice.call(arguments, 1);
names.forEach(makeNonEnumerable);
function makeNonEnumerable(name) {
var pd = Object.getOwnPropertyDescriptor(obj, name);
pd.enumerable = false;
Object.defineProperty(obj, name, pd);
}
}
makeNonEnumerable(colors, "length", "currentColor");
On Sat, Dec 3, 2011 at 2:59 PM, Jarek Foksa <ja...@kiwi-themes.com> wrote:
> Lets say I want to create "colors" collection. The color names inside
> the collection
> should be enumerable, while "length" and "currentColor" should not be
> enumerable:
>
> var colors = {
> // enumerable properties
> black: '#000',
> white: '#fff',
> blue: '#343',
> }
> // non-enumerable properties
> Object.defineProperty(colors, 'currentColor', { value : 'green',
> writable : true, enumerable : false, configurable : true});
> Object.defineProperty(colors, 'length', { value : 3, writable : true,
> enumerable : false, configurable : true});
>
> This code works as expected, but it's hard to read because of the
> verbose descriptor syntax. Is it possible
> to specify which properties should not be enumerable after they were
> defined?
>
> var colors: {
> black: '#000',
> white: '#fff',
> blue: '#343',
> currentColor: 'green',
> length: 3,
> }
>
> makeNonEnumerable(names.currentColor, names.length);
>
> --
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