How to validate in HTML5 to only allow in 'input type=file' video code example

Example 1: input limit file type html

<!-- (IE 10+, Edge (EdgeHTML), Edge (Chromium), Chrome, Firefox 42+) -->
<input type="file" accept=".jpg,.png,.pdf" />

Example 2: input type file filter extensions

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