# Configure Browser Spellcheck in RadEditor

In this article you will see how to adjust the native browser's spellcheck to get the desired behavior with runtime spellchecking in the content area.

Modern browsers support spellchecking as an out-of-the-box feature. This feature has nothing to do with the built-in [AjaxSpellChecker](https://www.telerik.com/products/aspnet-ajax/documentation/controls/editor/functionality/spellchecker/overview) of **RadEditor** and it is configurable by the [spellcheck](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Global_attributes/spellcheck) and [lang](https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/lang) DOM attributes.

> caption Example 1: How to disable browser spellcheck in RadEditor

```ASP.NET
<telerik:RadEditor runat="server" ID="RadEditor1" RenderMode="Lightweight" OnClientLoad="OnClientLoad">
</telerik:RadEditor>

<script>
    function OnClientLoad(editor, args) {
        editor.get_contentArea().setAttribute("spellcheck", "false");
    }
</script>
```

> caption Example 2: How to change the language of the browser spellcheck in RadEditor

```ASP.NET
<telerik:RadEditor runat="server" ID="RadEditor1" RenderMode="Lightweight" OnClientLoad="OnClientLoad">
</telerik:RadEditor>

<script>
    function OnClientLoad(editor, args) {
        editor.get_contentArea().setAttribute("lang", "de");
    }
</script>
```

> note Spellcheck language depends also on the installed language dictionaries in the browser.

## See Also

* [RadEditor Spellchecker Overview](https://www.telerik.com/products/aspnet-ajax/documentation/controls/editor/functionality/spellchecker/overview)
* [spellcheck attribute](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Global_attributes/spellcheck)
* [lang attribute](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Global_attributes/lang)