# 4. Pages

[![image.png](https://docs.tsnocode.com/uploads/images/gallery/2026-10/scaled-1680-/VrD588AXHes1yVyz-image.png)](https://docs.tsnocode.com/uploads/images/gallery/2026-10/VrD588AXHes1yVyz-image.png)

Codeunit

com.tsnocode.core.cms.PageEventHandler

[![image.png](https://docs.tsnocode.com/uploads/images/gallery/2026-10/scaled-1680-/gfTAcwcpWqKsY1IX-image.png)](https://docs.tsnocode.com/uploads/images/gallery/2026-10/gfTAcwcpWqKsY1IX-image.png)

```html
<script type="text/javascript">
function keepUrlSafeChars(input) {
    if (!input)
        return input;
    return input
        .toLowerCase()
        .replace(" ", "-")
        .replace(/[^a-zA-Z0-9\/_-]/g, '');
}
</script>
```

```javascript
$("#DATA_TITLE").on("change keyup", () => {
    setValue("PATH", keepUrlSafeChars(getValue("TITLE")))
})
```