binary representation in javascript code example

Example 1: binaryserachindex javascript

function binarySearchIndex (array, target, low = 0, high = array.length - 1) {
  if (low > high) {
    return -1
  }
  const midPoint = Math.floor((low + high) / 2)

  if (target < array[midPoint]) {
    return binarySearchIndex(array, target, low, midPoint - 1)
  } else if (target > array[midPoint]) {
    return binarySearchIndex(array, target, midPoint + 1, high)
  } else {
    return midPoint
  }
}

Example 2: how to convert to binary in javascript

function bin(num) {
    var binn = [];
    var c;
    while (num != 1) {
        c = Math.floor(num / 2);
        binn.unshift(num % 2);
        num = c;

    }
    binn.unshift(1)
    return binn
}
//returns list of binary nos. in order