upload image from clipboard on ctrl+v event on page

example.js

    function uploadFile(file) {
      var formData = new FormData();
      formData.append("userfile", file);
      var request = new XMLHttpRequest();
      request.onload = function () {
        if (request.status == 200) {
          document.location.href='/';
        } else {
          alert('Error! Upload failed');
        }
      };
      request.open("POST", "/compose/send");
      request.send(formData);
    }

    $("body").bind('paste', function(je){
      var e = je.originalEvent;
      for (var i = 0; i < e.clipboardData.items.length; i++) {
        var item = e.clipboardData.items[i];
        console.log('Item: ' + item.type);
        if (item.type.indexOf('image') != -1) {
          //item.
          uploadFile(item.getAsFile());
        } else {
          // ignore not images
          console.log('Discarding not image paste data');
        }
      }
    });