var par = 'global parameter';

function logpar(){
  console.log(this.par);
}

let object1 = {
  par: 'object1 parameter',
  func: logpar
}
let object2 = {
  par: 'object2 parameter',
  func: logpar
}

object1.func();  //"object1 parameter"
object2.func();  //"object2 parameter"

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