Ajax autocomplete - the autocomplete window not popping up-CodePudding

I seek a little help with ajax. I have this input which I want autocomplete with the script bellow. The url returns a list of strings. When I type, the data are shown in console however the autocomplete window does not pop up.

What might be wrong?

      <input type="text"  name="from" id="from">

      <script>
        $(document).ready(function () {
          $("#from").keyup(function (string) {
            $.ajax({
              type: "GET",
              url: "http://127.0.0.1:5000/complete?station="   $(this).val(),
              success: function (data) {
                
                $("#from").autocomplete({source: data})

                console.log(data)
              }
            });
          });
        })
      </script>

CodePudding user response：

You should add jQuery-ui.min.css, jquery.min.js and jquery-ui.min.js files to the project. The following application, which I developed using mock data, works successfully. I called the getList() method in the error field to simulate the response from the server.

Application test image is available below:

Application source code is available below:

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.css" />
  <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script>
  <title>Document</title>
</head>

<body>
  Input: <input type="text" id="inputElement" onkeyup="myFunction(this.value)">

  <script>
    function myFunction(value) {
      /* alert(`URL: http://127.0.0.1:5000/complete?station=${value}`); */
      $.ajax({
        type: "GET",
        url: "http://127.0.0.1:5000/complete?station="   value,
        success: function (data) {
          if (data != '') {
            $("#inputElement").autocomplete({
              source: data
            });
            console.log(data)
          }
        },
        /* I simulated the successful response from the server in the field below. */
        error: function (data) {
          $("#inputElement").autocomplete({
            source: getList()
          });
        }
      });
    }

    function getList() {
      var availableTags = ["ActionScript", "AppleScript", "Asp", "BASIC", "C", "C  ", "Clojure",
        "COBOL", "ColdFusion", "Erlang", "Fortran", "Groovy", "Haskell", "Scala",
        "Java", "JavaScript", "Lisp", "Perl", "PHP", "Python", "Ruby", "Scheme"
      ];
      return availableTags;
    }
  </script>
</body>
</html>

CodePudding user response：

This did it:

          $("#from").autocomplete({
          source: function (request, response) {
              $.ajax({
                  url: 'http://127.0.0.1:5000/complete?station='   $("#from").val(),
                  dataType: "json",
                  success: function (data) {
                      response(data);
                  },
                  error: function (xhr, status, error) {
                      alert("Error");
                  }
              });
          }
      });