autocomplate just open, not work

autocomplate just open, not work

Hi. Before, sorry my english not enought. I make this but just open list not a decompose.Is why?

  2. <!doctype html>
  3. <html lang="en">
  4. <head>
  5.   <meta charset="utf-8">
  6.   <title>autocomplete demo</title>
  7.   <link rel="stylesheet" href="//code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
  8.   <script src="//code.jquery.com/jquery-1.10.2.js"></script>
  9.   <script src="//code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
  10. </head>
  11. <body>
  12.  
  13. <label for="autocomplete">Select a programming language: </label>
  14. <input id="autocomplete">
  15.  
  16. <script>
  17. $( "#autocomplete" ).autocomplete({
  18.   source: "test.php"
  19.   
  20. });
  21. </script>
  22.  
  23. </body>
  24. </html>
and test.php

  2. [ "ActionScript",
  3.       "AppleScript",
  4.       "Asp",
  5.       "BASIC",
  6.       "C",
  7.       "C++",
  8.       "Clojure",
  9.       "COBOL",
  10.       "ColdFusion",
  11.       "Erlang",
  12.       "Fortran",
  13.       "Groovy",
  14.       "Haskell",
  15.       "Java",
  16.       "JavaScript",
  17.       "Lisp",
  18.       "Perl",
  19.       "PHP",
  20.       "Python",
  21.       "Ruby",
  22.       "Scala",
  23.       "Scheme"
  24. ]
link


Thanks.