JSPost

       function GoBtn() {
         var sftext='';

         for (var i = 1; i < 7; i++) {
           var l  = document.getElementById("textline"+i).value;
           if (l.length > 0) {
             sftext+=l+';';
           }
         }

         console.log(sftext);
         post('/', {textlist: sftext});
       }

       function post(path, params, method='post') {
         const form = document.createElement('form');
         form.method = method;
         form.action = path;

         for (const key in params) {
           if (params.hasOwnProperty(key)) {
             const hiddenField = document.createElement('input');
             hiddenField.type = 'hidden';
             hiddenField.name = key;
             hiddenField.value = params[key];

             form.appendChild(hiddenField);
           }
          }

          document.body.appendChild(form);
          form.submit();
       }