Often times, one must give users the ability to both select from a predefined list and free form type into a text box as an answer to a question on an HTML form. In standard HTML, there is the input text box which accepts any input. In addition, there is the Select box that allows one to pick from a predefined list of options. However, if you want both functionality, you must construct it yourself. This solution uses Twitter Bootstrap 4, HTML, and Javascript.    Read More.