Jquery POST --> Secure?

[eluser]echo sara[/eluser]
hi, Is it safe using post when sending data to your database? like my concern is since its js file and viewable by other isnt this method unsafe?

Code:

var name = $('#name').val();
  var username = $('#username').val();
  var email = $('#email').val();
  

  $.post('index.php/blog/members',{ name: name, username: username, email: email}, function(data) {
   $('#info').html(data);