Disable right click menu

disableRightClickMenu.js

/**
 * Disables the right click menu for the given element.
 */
function disableRightClickContextMenu(element) {
  element.addEventListener('contextmenu', function(e) {
    if (e.button == 2) {
      // Block right-click menu thru preventing default action.
      e.preventDefault();
    }
  });
}

// Once the page is loaded, disable the right click menu of the canvas.
$(document).ready(function() {
  disableRightClickContextMenu(document.getElementById('canvas'));
});