Practical frontend interview

1.scopes.js

(function() {
  var a = b = 5;
})();

console.log(b);

// 1. What will be printed on the console?
// 2. Rewrite the code to return the same result but with the variable declarations separated
// 3. Enable strict mode to explicitly reference the scope

2.native-methods.js

console.log('hello'.repeatify(3));

// 1. Write a method of String that prints 'hellohellohello'

3.hoisting.js

function test() {
  console.log(a);
  console.log(foo());

  var a = 1;
  function foo() {
    return 2;
  }
}

test();

// 1. What’s the result of executing this code and why

4.this.js

var fullname = 'Rude Ayelo';
var obj = {
   fullname: 'Helios Aliaga',
   prop: {
      fullname: 'Marcio Barrios',
      getFullname: function() {
         return this.fullname;
      }
   }
};

console.log(obj.prop.getFullname());

var test = obj.prop.getFullname;

console.log(test());

// 1. What is the result of the following code?
// 2. Fix the previous question’s issue so that the last console.log() prints Marcio Barrios