title: Sharepoint 2013. Multivalue lookup field with JavaScript
body: <p>Is there a way to edit a multivalue lookup field using the JavaScript Client Object Model?
  I need to remove one or more lookup values and, eventually, add one or more values.</p>
  
  <p>I search everywhere, I read MSDN documentation, ..., I also take a look under my desk!</p>
  
  <p>Thanks.</p>