Click to add text field

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title></title>
  <script src="https://code.jquery.com/jquery-2.1.4.js"></script>
  <script>
  $(function() {
    $("#clickMe").on('click', function() {
      var menu = "<label>Name</label><input type='text' name='name[]'>";
      $(menu).appendTo("#myForm");
    });
  });
  </script>
</head>
<body>
  <button id="clickMe">Click me to add column</button>
​
  <form id="myForm">
      
  </form>
</body>
</html>
    

https://code.jquery.com/jquery-2.1.4.js