Contao: Newsletter clear input form fields

mcp_responsive.js

(To clear input form fields)

function newsletterForm(){
    if($('#newsletterForm')[0]){
    $('#newsletterForm input[type=text]').each(function(){
        var input = $(this);
        input.data('label', input.val());
        input.focus(function() {
        input.val('');
        }).blur(function() {
        if(input.val() == '')
           input.val(input.data('label'));
        });
    });
    }
}