how to specific type of file in input file code example

Example 1: file input file types

<input type="file" accept=".gif,.jpg,.jpeg,.png,.doc,.docx">

Example 2: specifying file types in html file input

<input id="fileSelect" type="file" accept=".csv, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/vnd.ms-excel" />