Function on

Register event listener.

Example

// object as event channel
let channel = {};
// connect to event "changed"
on(channel,"changed",(msg)=> console.log(msg));

// it is possible to register to multiple events using ','
on(channel,"changed,click",(msg)=> console.log(msg));

// it is possible to register to any events using '*'
on(channel,"*",(msg)=> console.log(msg));

// on provides handle to unregister
let handle = on(channel,"changed",(msg)=> console.log(msg));
// unregister using "remove"
handle.remove();
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