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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)