How do I set more than one channel in javascript, using the phidget led 64?

sensor = new jPhidget22.DigitalOutput();
sensor.setDeviceSerialNumber(389142);

for(let i = 0 ; i <=1 ; i++){

sensor.setChannel(i);


}

This is what I tried so far...

Thank you!

I'd like to calculate the compass bearings but I have an interogation on what is LSB data and how to find it with my phidget spatial 3/3/3 basic This is an exemple I found on how to use a magnetometer to calculate the compass headings. If you could help me on the LSB thing it would really help. //--...