How to save custom product tab drop box fields values to database in Magento 2

Question

By using data-form-part="product_form" in input tag, text values are getting. But how gets the drop down values.

When i used data-form-part="product_form" same in option, it gives an array with key index [undefined] and always give its last value of dropdown

Answer 1

We can get the values in post by using the following in select tag.

data-form-part="product_form"