Smart UI Components & Libraries – Grid, Scheduler, Gantt, Kanban for Angular, React, Next.js, Vue, Blazor, JavaScript › Forums › General Discussions › Date & Time Pickers › Date picker error for nl_be This topic has 1 reply, 2 voices, and was last updated 1 month, 3 weeks ago by Markov. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts September 10, 2025 at 3:13 pm #112949 tbettinazzi@axioma.itParticipant I use the smat-elements date picher but when I try to set as language nl_BE (Dutch Belgium) it goes into error. jquery-min.js?v=3.6.0:2 jQuery.Deferred exception: Invalid language tag: nl_be RangeError: Invalid language tag: nl_be at Date.toLocaleString (<anonymous>) at Function.getLocalizedNames (http://localhost:8080/web-rubik/rubikscripts/smart-components/smart.elements.js?v=20.0.0:9:25113) at BaseElement._getLocalizedNames (http://localhost:8080/web-rubik/rubikscripts/smart-components/smart.elements.js?v=20.0.0:78:28885) at BaseElement.propertyChangedHandler (http://localhost:8080/web-rubik/rubikscripts/smart-components/smart.elements.js?v=20.0.0:78:17396) at t.updateProperty (http://localhost:8080/web-rubik/rubikscripts/smart-components/smart.elements.js?v=20.0.0:6:76010) at BaseElement.set [as locale] (http://localhost:8080/web-rubik/rubikscripts/smart-components/smart.elements.js?v=20.0.0:6:77144) at datepickerInit (http://localhost:8080/web-rubik/rubikscripts/i18n/datepicker.js?v=4402.0:8:28) at HTMLDocument.<anonymous> (http://localhost:8080/web-rubik/ConfiguratoreWeb:57:5) How can I solve ? tks at e (http://localhost:8080/web-rubik/rubikscripts/jquery-min.js?v=3.6.0:2:30038) at t (http://localhost:8080/web-rubik/rubikscripts/jquery-min.js?v=3.6.0:2:30340) undefined September 10, 2025 at 4:20 pm #112950 MarkovKeymaster Hi, Such language tag is indeed invalid and the error points it out. You can observe that the error is from the native JS Date.toLocaleString which means that nl_BE is invalid String for a Locale. Best regards, Markov Smart UI Team https://www.htmlelements.com/ Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In With Google Log In