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.map((student)=>{
      return student.name

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.find((student)=>{
      return student.name === "lilly"

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},
  ]
  students.forEach((student)=>{
      console.log(student);

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 olderStudents = students.some((student)=>{
      return student.age > 15

shoaibmehedi7

const students = [2, 7, 78, 9, 5]
  let arrayContains = students.includes(7)
  console.log(arrayContains);
//   Expected output
// true

shoaibmehedi7

const express = require("express");
const app = express();
app.get("/login", (req, res) => res.send("Already Logged in"));
app.post("/login", (req, res) => res.send("Logged in"));

app.listen(3000, () => console.log("server running on port 3000"));

shoaibmehedi7

const express = require("express");
// import rate limiter
const rateLimit = require("express-rate-limit");
const app = express();
// use ratelimiter into express
app.use(
    // Configure rate limiter
    rateLimit({
        windowMs : 5 * 60 * 1000, //limiting for 5 minutes
        max : 5, //maximun request quota 5 in particular time limit

shoaibmehedi7

//Bad practice
for(let i = 0; i < 50; i++){
    //do something
}
//Good practice
let NUMBER_OF_STUDENTS= 50
for(let i = 0; i < NUMBER_OF_STUDENTS; i++){
    //do something
}

shoaibmehedi7

// bad practice
const array = [ [ ['Shoaib Mehedi'] ] ]
array.forEach((firstArr) =>{
    firstArr.forEach((secondArr) => {
        secondArr.forEach((element) => {
            console.log(element);
        })
    })
})

shoaibmehedi7

// bad practice
const addSub = (a,b) => {
    // add
    const addition = a+b
    // sub
    const sub = a-b
    // returning as a string
    return `${addition}${sub}`
}