const MAX_NUMBER=100;
const MY_NUMBER=57;
const counter_max =7;

let low=0,high=MAX_NUMBER;
let counter=0;

while(low <= high){

  ++counter;

  let med=Math.round((high+low)/2);
  console.log(`L:${low} .. M:${med} .. H:${high}`);

  if (MY_NUMBER >  med){
    low=med+1;
  }else
   if (MY_NUMBER < med){
     high = med-1;
  }
   else
  {
    console.log(`Your number is ${med} and required ${counter} iters`);
    break;
  }

}