HTML datalist Tag - W3Schools
https://www.w3schools.com/tags/tag_datalist.aspDefinition and Usage. The <datalist> tag specifies a list of pre-defined options for an <input> element.. The <datalist> tag is used to provide an "autocomplete" feature for <input> elements. Users will see a drop-down list of pre-defined options as they input data. The <datalist> element's id attribute must be equal to the <input> element's list attribute (this binds them together).