To add an icon to a Button, set the icon property. This demo shows how you can use this property:
DevExtreme ships with its own icon library. Pick any icon and assign its name to the icon property.
Set the icon value to the image file path or URI.
3rd-party icon fonts
You can import a 3rd-party font library (this example uses Font Awesome). In such cases, set the icon property to a name that identifies the required glyph. Look up names in the imported library's documentation.
Buttons with icons and no caption text
Define the icon, but do not define the text property. You can use the hint property to annotate the button.
Refer to the Icons help topic for additional information.