title: I need to read a text file from a javascript
body: <p>I'm writing webpage with a javascript to read data files in text format from the server per user request. Once the text file has been loaded, I need to manipulate the data somewhat.</p>
  
  <p>I have been using XMLHttpRequest for the loading, however, now I see that synchronous requests are "deprecated". I can't start manipulating the data before it's loaded, so what can I do in this case?</p>