<input type="button" value="New Tab" onclick="window.open('https://www.example.com')">
The formtarget attribute specifies where to display the response after submitting the form. This attribute overrides the form's target attribute.
The formtarget attribute is only used for buttons with type="submit". (https://www.w3schools.com/tags/att_button_formtarget.asp) Hope it helps, André Siébra