Add Button to Form to Open Hyperlink for Item

When the user pastes the URL in the Data field and then clicks the Button then will open the link according.

frappe.ui.form.on('Item', { 
    button_field_name: function(frm) { 
        var openlink = window.open(frm.doc.your_data_field);
    } 
});

Button: button_field_name
Data field: your_data_field

Aadhil P M