How to submit a form with layui of form.on ban refresh the page

A: Just add a return false bottom form.on inside; to

E.g:

 form.on('submit(component-form-demo1)', function(data){
            var fields=$(data.form).serialize();
            $.ajax({
                 url : "url",
                 type : "POST",
                 async: false,
                 dataType : "json",
                 data:fields,
                 success : function(result) {
                     
                 },
                 error : function(result) {
                     
                 }
             });
            return false;
        });