Why my form only work in chrome when Js is active?

Question

To submit my form, the user need choice the price of your ticket by html droplist.

Here is JS the code:

var ticket = document.getElementById('ticket-box');
var member = document.getElementById('member');
var form = document.getElementById('form');

form.style.display = 'none';
ticket.style.display = 'none';

member.addEventListener('change', function() {
  var chosen = member.options[member.selectedIndex].index;


  if(chosen == 1) {
    form.style.display = 'inline-block';
    ticket.style.display = 'inline-block';
    form.selectedIndex = 2;
    form.options[0].style.display = 'none';
    form.options[1].style.display = 'none';
    form.options[2].style.display = 'inline-block';
    form.options[3].style.display = 'inline-block';
    form.options[4].style.display = 'none';
    form.options[5].style.display = 'none';

$(function() {
   $('#btnget').click(function(e) {

      let formValido =  document
    .getElementById("formulario")
    .checkValidity();

      if(formValido){
         $("#formulario")
         .attr("action", $('#form').val())
         .submit();
      }
   })
});
  }  
  });

This only works in chrome (email is comming only in chrome).

Why is this happening?

form link: http://www.congressoprotecaodados.com.br/inscricao/form22.html

Answer 1

也许你正在使用一些只支持chrome的javascript函数或关键字。请参考mozilla developpe netword来检查浏览器对任何内置函数的支持。