Hi beczkowski
Try to copy code from this file: https://jqueryui.com/resources/demos/datepicker/i18n/datepicker-fr.js
( function( factory ) {
if ( typeof define === "function" && define.amd ) {
// AMD. Register as an anonymous module.
define( [ "../widgets/datepicker" ], factory );
} else {
// Browser globals
factory( jQuery.datepicker );
}
}( function( datepicker ) {
datepicker.regional.fr = {
closeText: "Fermer",
prevText: "Précédent",
nextText: "Suivant",
currentText: "Aujourd'hui",
monthNames: [ "janvier", "février", "mars", "avril", "mai", "juin",
"juillet", "août", "septembre", "octobre", "novembre", "décembre" ],
monthNamesShort: [ "janv.", "févr.", "mars", "avr.", "mai", "juin",
"juil.", "août", "sept.", "oct.", "nov.", "déc." ],
dayNames: [ "dimanche", "lundi", "mardi", "mercredi", "jeudi", "vendredi", "samedi" ],
dayNamesShort: [ "dim.", "lun.", "mar.", "mer.", "jeu.", "ven.", "sam." ],
dayNamesMin: [ "D","L","M","M","J","V","S" ],
weekHeader: "Sem.",
dateFormat: "dd/mm/yy",
firstDay: 1,
isRTL: false,
showMonthAfterYear: false,
yearSuffix: "" };
datepicker.setDefaults( datepicker.regional.fr );
return datepicker.regional.fr;
} ) );
paste into the end of this file: \components\com_jamegafilter\assets\js\script.js
then edit the text for date in above code as you wish.