Pusher: How to bind to 100s of events?

问题:

The push library works as below

var channel = pusher.subscribe('test_channel');
channel.bind('my_event', function(data) {
  alert(data.message);
});

However: Would I be able to do this?

var channel = pusher.subscribe('test_channel');
channel.bind(['my_event1', 'my_event2'....'my_event100'], function(data) {
  alert(data.message);
});

In my use case, I have one channel and there are many different events and each client might want to simulantaneously subscribe to 100s of events.

回答1:

The signature for the channel.bind function is String channelName, Function callback (pusher-js source). You can't pass in an Array of channels`.

If you want the same function to be called then you'll need to pass a reference to the function and call bind multiple times:

var channel = pusher.subscribe('test_channel');
var callback = function(data) {
  alert(data.message);
};

var eventName;
for( var i = 0; i < 100; ++i ) {
  eventName = 'my_event' + ( i + 1 );
  channel.bind( eventName, callback );
}

The single-threaded nature of JS will equate to these event binding happening simultaneously.

You could of course create your own helper function to allow bind( Array eventNames, Function callback ).