jQuery datepicker fallback on HTML5 date incompatible browsers

datepicker.js

jQuery(function($) {
    var $inputs = $('input[type="date"]');

    if (!$inputs.length) return;

    /*
     * The browser does not support the HTML5 date type.
     *
     * We add the datepicker as a fallback.
     */
    if ('date' !== $inputs.get(0).type) {
        $inputs.attr('data-datepicker', 'datepicker');
    }
});