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ipc (renderer)
The ipc module provides a few methods so you can send synchronous and
asynchronous messages to the browser, and also receive messages sent from
browser. If you want to make use of modules of browser from renderer, you
might consider using the remote module.
See ipc (browser) for examples.
ipc.send(channel[, args...])
Send args.. to the web page via channel in asynchronous message, the browser
process can handle it by listening to the channel event of ipc module.
ipc.sendSync(channel[, args...])
Send args.. to the web page via channel in synchronous message, and returns
the result sent from browser. The browser process can handle it by listening to
the channel event of ipc module, and returns by setting event.returnValue.
Note: Usually developers should never use this API, since sending synchronous message would block the whole web page.