It’s not valid to have two inputs of the same name. If you want to do this, you can use

Use Html Below

<input name="titles[]">
<input name="titles[]">
​<button>submit</button>​​​​​​​​​​​​​​​​​​​​​​​

Use JQuery Below

// click handler
function onClick(event) {
  var titles = $('input[name^=titles]').map(function(idx, elem) {
    return $(elem).val();
  }).get();

  console.log(titles);
  event.preventDefault();
}

// attach button click listener on dom ready
$(function() {
  $('button').click(onClick);
});