how to find out the type of input file code example

Example 1: input type file filter extensions

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

Example 2: get file extension file upload control in javascript

<input id='inputfile' type='file' name='inputfile' onChange='getoutput()'><br>
    Output Filename <input id='outputfile' type='text' name='outputfile'><br>
    Extension <input id='extension' type='text' name='extension'>