This feature has been removed from the Web standards. Though some browsers may still support it, it is in the process of being dropped. Do not use it in old or new projects. Pages or Web apps using it may break at any time.
The articles below describe each of the APIs related to NPAPI plugins.
- Browser-side plug-in API
- This chapter describes methods in the plug-in API that are provided by the browser; these allow call back to the browser to request information, tell the browser to repaint part of the window, and so forth. The names of all of these methods begin with
NPN_to indicate that they are implemented by the browser and called by the plug-in.
NPP_to indicate that they are implemented by the plug-in and called by the browser.