nirabpant

//Example 4
const arr = ['a', 'b'];

// Validate that an array literal will have the 'Array.prototype' object
// as its immediate parent in the prototype chain which in turn will have
// as its prototype 'Object.prototype' which is the last link in the chain
console.log(arr.__proto__ === Array.prototype); // true
console.log(Array.prototype.__proto__ === Object.prototype); // true

// Validate that 'Object.prototype' is the last link in the prototype chain as

nirabpant

//Example 3
const arr = ['a', 'b'];

// Arrays have a type of 'object' and in addition to the
// explicitly declared properties and values, it can also access
// built-in methods through inheritance along its prototype chain
console.log(typeof arr); // 'object'
console.log(arr[0]); // 'a'
console.log(arr[1]); // 'b'
console.log(arr.join('')); // 'ab'

nirabpant

// Example 2
// create new function 'func'
const func = function() {
  console.log('hello world!');
};

// Validate that the [[Prototype]] of the function object 'func' is 'Function.prototype'
// which is the base object from which all other functions inherit.  The 'constructor'
// property of 'func' simply points back to the 'Function' constructor.
console.log(func.__proto__ === Function.prototype); // true

nirabpant

// Example 1
const obj = {
  color: "blue",
  amount: 100,
};

// Check the type of the object literal 'obj'
console.log(typeof obj); // 'object'

// Verify that 'obj' has the properties we expect it to have

nirabpant

function nextBiggerNum(inputNum) {
  let newNum = inputNum + 1;
  let initLen = String(inputNum).length;
  
  while (String(newNum).length <= initLen) {
    if (sameDigits(inputNum, newNum)) {
      return newNum;
    }
    newNum += 1;
  }

nirabpant

function nextBiggerNum(num) {
  let validNumsArr = getValidNums(num);
  let validNumsSorted = getSortedUniqueNums(validNumsArr);

  let numIdx = validNumsSorted.indexOf(String(num));
  
  // check if largest possible num
  if (numIdx === validNumsSorted.length - 1) return -1;
  
  // if not largest, return next bigger num