:in-range and :out-of-range CSS pseudo-classes

If a temporal or number `<input>` has `max` and/or `min` attributes, then `:in-range` matches when the value is within the specified range and `:out-of-range` matches when the value is outside the specified range. If there are no range constraints, then neither pseudo-class matches.

javascript built-in: intl: numberformat: `numberformat()` constructor: `options` parameter: `options.usegrouping` parameter: `options.usegrouping` parameter accepts: `'always'`, `'auto'`, `'min2'` (in addition to: `true` and `false`)

javascript built-in: number: min_value