console.log("hi muskan");

let myName="muskan";

let age=19;

let isReady=true;

console.log(myName);

console.log(age);

console.log(isReady);

console.log(" my name is "+myName +" i am " + age +" years old "+" my future is Ready and its "+ isReady);

// exercise 1

let favouriteColor="blue";

let city="Raebareli";

let codePractice="2-3 hours max";

console.log("I am from "+city+" my favourite color is "+favouriteColor+" and i can give "+codePractice+" daily");

// exercise 2

let myAge=30;

if(myAge<20){

console.log("you are a teenager");

}

else if(myAge>=20 && myAge<=29 ){

console.log("you are in your 20s");

}

else{

console.log("you are 30 or above");

}

// exercise 3

let hoursCodeToday=2;

if(hoursCodeToday>1){

console.log("Future Muskan Is Proud");

} else if(hoursCodeToday==1){

console.log("Almost There");

} else{

console.log("Open VS Code now")

}

// arrays

let Skills=["HTML","CSS","JavaScript","React JS","node"];

console.log(Skills[0],Skills[1],Skills[2],Skills[3]);

Skills.push("NODE JS");

console.log(Skills);

Skills.pop();

console.log(Skills);

Skills.shift();

console.log(Skills);

Skills.unshift("HTML");

console.log(Skills);

Skills.forEach(function(Skill){

console.log("i know "+ Skill);

});

Skills.forEach(function(Skill){

console.log(" i am learning "+Skill+ " and it will get me a job");

});

Skills.forEach((Skill)=>{

console.log(" i know "+Skill);

})

// map

let upperSkills=Skills.map((Skill)=>{

return Skill.toUpperCase();

})

console.log(upperSkills);

let mapPractice=Skills.map((Skill)=>{

return "i know "+Skill;

})

console.log(mapPractice);

// filter

let number=[1,3,5,4,7,2];

let evenNum=number.filter((number)=>{

return number%2==0;

})

console.log(evenNum);

let oddNum=number.filter((number)=>{

return number%2!=0;

})

console.log(oddNum);

// challenge 1

let numbers=[1,2,3,4,5,6,7,8,9,10];

let greatNums=numbers.filter((number)=>{

return number>5;

})

console.log(greatNums);

// challenge 2

let skillFilter=Skills.filter((Skill)=>{

return Skill.length>3;

})

console.log(skillFilter);

let findNum=numbers.find((number)=>{

return number>7;

})

console.log(findNum);

// methods ----------------------

// ------slice------

let firstTwo=Skills.slice(1,4);

console.log(firstTwo);

console.log(Skills);

// -------includes--------

console.log(Skills.includes("CSS"));

console.log(Skills.includes("Python"));

console.log(Skills.indexOf("JavaScript"));

console.log(Skills.indexOf("Python"));

// -------splice-----------------

Skills.splice(1,2)

console.log(Skills);

// practice exercise

let students=[

{name:"Muskan",marks:91,city:"Kanpur"},

{name:"Priya",marks:45,city:"Delhi"},

{name:"Riya",marks:72,city:"Kanpur"},

{name:"Sneha",marks:33,city:"Mumbai"},

{name:"Anjali",marks:85,city:"Delhi"}

]

let studentName=students.map((student)=>{

return student.name;

})

console.log(studentName);

let studentScore=students.filter((student)=>{

return student.marks>60;

})

console.log(studentScore);

let studentAddrs=students.filter((student)=>{

return student.city=="Kanpur";

})

console.log(studentAddrs);

let stuMark=students.find((student)=>{

return student.marks<50;

})

console.log(stuMark);

// object

// exercise 1

let myProfile={

name:"muskan maurya",

age:20,

city:"kanpur",

skills:["HTML","CSS","JavaScript","React JS","NODE JS","Express JS","MongoDB"]

}

console.log(myProfile.name);

console.log(myProfile.age);

console.log(myProfile.city);

console.log(myProfile.skills);

// exercise 2

let phone={

brand:"Samsung Galaxy A12",

price:125000,

color:"cherry red"

}

phone.price=150000;

phone.isAvailable=true;

console.log(phone.isAvailable);

console.log(phone.price);

// final boss exercise

let stu=[

{name:"Muskan",marks:91,city:"Kanpur"},

{name:"Priya",marks:45,city:"Delhi"},

{name:"Riya",marks:72,city:"Kanpur"},

{name:"Sneha",marks:33,city:"Mumbai"},

{name:"Anjali",marks:85,city:"Delhi"}

]

let passStu=stu.filter((res)=>{

return res.marks>=40;

})

console.log(passStu);

let passStuNames=passStu.map((res)=>{

return res.name;

})

console.log(passStuNames);

passStuNames.forEach((res)=>{

console.log("Congratulations "+ res+" you Passed!");

})

let findstudent=stu.find((res)=>{

return res.city=="Kanpur";

})

console.log(findstudent);

// object method

let stu1={

name:"muskan",

city:"kanpur",

age:19,

skills:["HTML","CSS","JavaScript"]

}

console.log(Object.keys(stu1));

console.log(Object.values(stu1));

console.log(Object.entries(stu1))

Object.keys(stu1).forEach((key)=>{

console.log(key+" : "+stu1[key]);

})

// exercise

let scores={

javascript:85,

react:72,

nodejs:68,

mongodb:90

}

Object.keys(scores).forEach((score)=>{

console.log(score+" score is "+scores[score]);

})

// Exercise

let products=[

{name:"iphone",price:80000,category:"phone",inStock:true},

{name:"Samsung",price:45000,category:"phone",inStock:false},

{name:"MacBook",price:120000,category:"laptop",inStock:true},

{name:"Dell",price:60000,category:"laptop",inStock:true},

{name:"ipad",price:40000,category:"tablet",inStock:false}

]

// Q1

let isAvailable=products.filter((product)=>{

return product.inStock==true;

})

console.log(isAvailable);

// Q2

let underPrice=products.filter((product)=>{

return product.price<=70000;

})

console.log(underPrice);

// Q3

let productNames=products.map((product)=>{

return product.name;

})

console.log(productNames);

// Q4

let findLaptop=products.find((product)=>{

return product.category=="laptop";

})

console.log(findLaptop);

// Q5

let getProducts=isAvailable.map((product)=>{

return product.name;

})

console.log(getProducts);

// Q6

Object.keys(products[0]).forEach((product)=>{

console.log( product+" : "+products[0][product]);

})

// Q7

let categories=["phone","laptop","tablet"];

console.log(categories.includes("smartwatch"));

// Q8

let brands=["apple","samsung","dell","hp"];

let findIndex=brands.indexOf("samsung");

brands.splice(findIndex,1);

console.log(brands);

// ------------function-------------------------

let nameGreet=function greet(name,city){

console.log("HI i am "+name+" from "+city)

}

nameGreet("muskan","kanpur");

function isPass(marks){

if(marks>=40){

return "pass!"

}else{

return "fail!"

}

}

console.log(isPass(40));

console.log(isPass(35));

console.log(isPass(70));

function birthYear(currentYear,bornYear){

let Age=currentYear-bornYear;

console.log(Age);

}

birthYear(2026,2005);

// ---------------------- arrow function-----------------------

let greet=(name,city)=>{

return "my name is "+name+" i am from "+city;

}

let greeting=greet("muskan","kanpur");

console.log(greeting);

let ispASS=(marks)=>{

if(marks>=40){

return "pass!";

}else{

return "fail";

}

}

let pass=ispASS(56);

console.log(pass);

let calculateAge=(birthyear)=>{

return 2026-birthyear;

}

let total=calculateAge(2006);

console.log(total);

function greets(name,callback){

console.log("hi "+ name);

callback() //calling the function passed in

}

function sayBye(){

console.log("bye");

}

greets("muskan",sayBye);

// function practice

let calculate=(num1,num2,callback)=>{

let result=callback(num1,num2);

console.log(result);

}

let add=(num1,num2)=>{

return num1+num2;

}

let multiply=(num1,num2)=>{

return num1*num2;

}

calculate(5,6,add);

calculate(2,3,multiply);

// exercise 1

let multi=(a,b)=>{

return a*b;

}

let res=multi(88,67);

console.log(res);

// exercise 2

let checkOddEven=(num)=>{

if(num%2==0){

console.log("even");

}else{

console.log("odd");

}

}

checkOddEven(6);

// exdercise 3

let stu5=[

{name:"muskan",marks:85},

{name:"priya",marks:33},

{name:"riya",marks:72},

{name:"sneha",marks:40}

]

let getPassedStudents=(stu5)=>{

let calc=stu5.filter((res)=>{

return res.marks>=40;

})

return calc;

}

let result=getPassedStudents(stu5);

console.log(result);

// exercise 4

let Operate=(num1,num2,callback)=>{

let result = callback(num1,num2);

console.log(result);

}

let addition=(num1,num2)=>{

return num1+num2;

}

let substract=(num1,num2)=>{

return num1-num2;

}

let divide=(num1,num2)=>{

return num1/num2;

}

Operate(45,67,addition);

Operate(56,60,substract);

Operate(60,7,divide);

// exercise 5

let stu6=[

{name:"muskan",marks:85,city:"delhi"},

{name:"priya",marks:33,city:"kanpur"},

{name:"riya",marks:72,city:"gurgaon"},

{name:"sneha",marks:40,city:"noida"}

]

let describeStudent=(stu6)=>{

let greet=stu6.forEach((res)=>{

let status=res.marks>=40?"Pass!!":"fail!!"

console.log(res.name + " is from "+res.city+" and scored "+res.marks +" and is "+status)

})

}

describeStudent(stu6);

// exercise 1

let findMax=(num1 ,num2,num3)=>{

if(num1>=num2 && num1>=num3){

return num1

} else if(num2>=num1 && num2>=num3){

return num2

}else{

return num3

}

}

let RESULT=findMax(23,6,57);

console.log(RESULT);

// exercise 2

let s="muskan";

let reverseString=(s)=>{

let result=s.split("").reverse().join("");

return result;

}

console.log(reverseString(s));

// exercise 3

let cvowel="muskan";

let countVowels=(cvowel)=>{

let count=cvowel.split("").filter((res)=>{

if(res=='a'||res=='e'||res=='i'||res=='o'||res=='u'){

return res;

}

})

return count.length;

}

let response=countVowels("muskan");

console.log(response);

// exercise 1

let findLongestWord=(word)=>{

let longWord=word.split(" ");

let longest="";

longWord.forEach((res)=>{

if(res.length>longest.length){

longest=res;

}

})

return longest;

}

let finding=findLongestWord("javascrpt programming evalute new technology");

console.log(finding);

// exercise 2

let productss=[

{name:"phone",price:20000},

{name:"phone",price:2000},

{name:"phone",price:500},

]

let calculateTotal=(productss)=>{

let count=0;

productss.forEach((res)=>{

count+=res.price;

})

return count;

}

let totalSum=calculateTotal(productss);

console.log(totalSum);

// exercise 3

let removeDuplicates=(NUM)=>{

let newArr=[];

NUM.forEach((res)=>{

if(!newArr.includes(res)){

newArr.push(res);

}

})

return newArr;

}

let findOut=removeDuplicates([3,5,5,5,5,6,8,]);

console.log(findOut);

// repeat exercise

let LongestWord=(s)=>{

let newS="";

let finding=s.split(" ");

finding.forEach((res)=>{

if(res.length>newS.length){

newS=res;

}

})

return newS;

}

let output=LongestWord(" psychologically important");

console.log(output);

// exercise 4 created by myself

let findSmallestWord=(s1)=>{

let finds=s1.split(" ");

let small=finds[0];

finds.forEach((res)=>{

if(res.length<small.length){

small=res;

}

})

return small;

}

let showSmallWord=findSmallestWord("hiiii mia");

console.log(showSmallWord);

// previous exercise

// Q1

let longest=(s2)=>{

let long="";

let finds=s2.split(" ");

finds.forEach((res)=>{

if(res.length>long.length){

long=res;

}

})

return long;

}

let doIt=longest(" bravoo! Good to be hurt");

console.log(doIt);

// Q2

let removeDuplicates2=(arr1)=>{

let arr2=[];

arr1.forEach((res)=>{

if(!arr2.includes(res))

arr2.push(res);

})

return arr2;

}

let remove=removeDuplicates2([1,2,1,4]);

console.log(remove);

// Q3

let showProduct=[

{name:"phone",price:30000},

{name:"earphone",price:100},

{name:"earpods",price:500},

]

let calculations=(showProduct)=>{

let count=0;

showProduct.forEach((res)=>{

count=count+res.price;

})

return count;

}

let calculatePrice=calculations(showProduct);

console.log(calculatePrice);

// Q3

let countVowel=(s4)=>{

let finds=s4.split("").filter((res)=>{

if(res=='a'||res=='e'||res=='i'||res=='o'||res=='u'||res=='A'||res=='E'||res=='I'||res=='O'||res=='U'){

return res;

}

})

return finds;

}

let showVowels=countVowel("Muskan and Alexa are good Friends");

console.log(showVowels);

let newArr=["cherry","rose","leaves","summer"]

let newIndex=newArr.indexOf("cherry");

newArr.splice(newIndex,1)

console.log(newArr)