This snippet will convert any text entered to UPPERCASE immediately upon entering the text:
$(document).on('knack-view-render.any', function (event, view, data) {
// Remove #field_1 so it works for ALL inputs
$('input#field_1').keyup(function() {
this.value = this.value.toUpperCase();
});
});
The snippet posted above only affects the main login screen. If you have a manage user screen or emails within your app that you don't want converted to uppercase, then you will have to add those field ID's in with the snippet.