shoaibmehedi7

const students = [
  {"name":"shoaib","age":20},
  {"name":"alex","age":10},
  {"name":"mehedi","age":5},
  {"name":"linda","age":12},
  {"name":"lilly","age":2},
  {"name":"william","age":1},
]

shoaibmehedi7

var x = 10;

function createFunction1() {
    var x = 20;
    return new Function('return x;'); // this |x| refers global |x|
}

function createFunction2() {
    var x = 20;
    function f() {

shoaibmehedi7

// Simple way
const person = { name: "Shoaib", Age: 25, Gender: "Male" };
for (const property in person) {
  console.log(`${property}: ${person[property]}`);
}

// Another way
const anotherPerson = {
  Name: 'Shoaib',
  Age: 25,

shoaibmehedi7

// reverse using basic functions
function reverse(string) {
    return string.split("").reverse().join("");
}
console.log(reverse('shoaib'));

// reverse using loop
function reverse(string) {
    var newString = "";
    for (var i = string.length - 1; i >= 0; i--) {

shoaibmehedi7

const students = [
  {name: 'Shoaib', roll: 2},
  {name: 'Mehedi', roll: 10},
  {name: 'Alex', roll: 5}
];

function search(student) {
  return student.name=== "Mehedi";
}

shoaibmehedi7

let arrOne = [1,3,5]
let arrTwo = [2,4,6]
// first way
let combine = arrOne.concat(arrTwo) 
console.log(combine)
// second way
combine = [...arrOne,...arrTwo]
console.log(combine)

shoaibmehedi7

// sort alphabetically
const name = ['Shoaib', 'Mehedi', 'Alex', 'Jane'];
const arr = [1, 30, 4, 21, 100000];
name.sort();
console.log(name);

// sort numerically
arr.sort(function(a, b) {
  return a - b;
});

shoaibmehedi7

function mostRepeated(array){
    return array.sort((a,b) =>
          array.filter(v => v===a).length
        - array.filter(v => v===b).length
    ).pop();
}

console.log(mostRepeated(['shoaib', 'alex', 'mehedi', 'alex'])); // apple

shoaibmehedi7

var object = {
  res: 0,
  add: function(a, b) {
    this.res = a + b; 
    return this;
  },

  multiply: function(a) {
    this.res = this.res * a;
    return this;

shoaibmehedi7

const students = [
    {"name":"shoaib","age":20},
    {"name":"alex","age":10},
    {"name":"mehedi","age":5},
    {"name":"linda","age":12},
    {"name":"lilly","age":2},
    {"name":"william","age":1},
  ]
  let filter = students.filter((student)=>{
      return student.age <= 10