title: Accept csv files only via a Html file input
body: <p>Html file input tag is given below which only accept .csv files.</p>
  
  <p><code>&lt;input id="csvFileInput" type="file" accept=".csv"/&gt;</code></p>
  
  <p>That works perfect. But my case is..</p>
  
  <p>In the file chooser window, user can select 'all types' instead of '.csv file'.
  Then user can choose any file type.
  How could I handle that situation?</p>
  
  <p>Can I handle that changing only Html tag? or another Javascript tactic to be implement?</p>
  
  <p>Thanks,
  Best Regards..</p>