title: how to write the user inputted values into the csv file or excel file in html page
body: <p>How can i export the values of the text box in html to a csv or a excel 
  .I have created an HTML Form which will be used from a local computer and want the form data to be saved in CSV file.</p>
  
  <p>Each time the form is submitted, it should add a line in the CSV file.</p>
  
  <p>This needs to be run locally so cannot use PHP or JSP.</p>