> For the complete documentation index, see [llms.txt](https://javascriptuse.gitbook.io/advanced/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://javascriptuse.gitbook.io/advanced/javascript/thiet-lap-gia-tri-mac-dinh-ban-dau-tren-html-nhu-binh-thuong-ok.md).

# Thiết lập giá trị mặc định ban đầu trên HTML như bình thường (ok)

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

<head>
  <meta charset="UTF-8">
  <title>Document</title>
  <link href="https://cdn.jsdelivr.net/npm/select2@4.0.13/dist/css/select2.min.css" rel="stylesheet" />
  <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/select2@4.0.13/dist/js/select2.min.js"></script>
</head>

<body>
  <select class="js-example-basic-single" name="state">
    <option value="">--Select--</option>
    <option  selected="selected" value="AL">Alabama</option>
    <option value="WY">Wyoming</option>
  </select>
  <script>
  $(document).ready(function() {
    ajax: {
      url: "/contacts",
      dataType: "json",
      delay: 200,
      data: function(params) {
        return {
          search: params.term
        };
      },
      processResults: function(data) {
        return {
          results: data
        };
      },
      cache: true
    }
  });
  </script>
</body>

</html>
```

![](https://2494213435-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LYjAG13rAPdbArSfRyB%2F-M7gGxRLe6FillsfvAfP%2F-M7gHuLnZ4ivE-JFJTrL%2F8.png?alt=media\&token=c9ad1bde-ac34-45d8-acfc-ff8e5b924cd4)
