Oftentimes, web users are already habituated to the use of default right-click context menus in browsers, at least for most web pages. Oncontextmenu is certainl

Oftentimes, web users are already habituated to the use of default right-click context menus in browsers, at least for most web pages. Oncontextmenu is certainly great for some applications, which is why it's there, but it can damage usability if it's abused. Whenever I visit a site with right-click events, I think back to the early days of the web, when webmasters tried to prevent you from viewing their source by capturing right-clicks (then you just had to use the menu bar).