Selection End Event

selend.js

   let selectionEndTimeout = null,
          event = new Event('selectionEnd');


      document.addEventListener('selectionEnd', function (evt/*event*/) { 
          console.log("End selection!")
      }, false);

      [
        "mouseup",
        "selectionchange"
      ].map(e => {
        document.addEventListener(e.toString(),(evt/*event*/)=>{

          if (selectionEndTimeout && evt.type == "selectionchange") {
              clearTimeout(selectionEndTimeout);
              console.info('User Selection Changed');
          }

          selectionEndTimeout = setTimeout(function () {
              if (evt.type == "mouseup" && window.getSelection().toString() != "") {
                  document.dispatchEvent(event);
              }
          }, 100);

        })
      })

Work fine! Thanks