input type file displaying input box code example
Example 1: how to take a file input in html form
<label for="myfile">Select a file:</label>
<input type="file"
id="myfile" name="myfile">
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" />