javaScript_class_six/script.js at main · anikahamedofc/javaScript_class_six · GitHub

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// 1.Function Declearation

// example 1

function calculateAge(birthYear) {

const age = 2022 - birthYear;

return age;

}

const age1 = calculateAge(1992);

console.log(age1); // expected output: 30

// example 2 with short code with {DRY} dry means don't repet yourself!!

function calAge(birthYear1) {

return 2022 - birthYear1;

}

const age2 = calAge(1995);

console.log(age2); // expected output: 27

// example 3 Door width hight

function calcRectArea(totalHight) {

const hight = 7 * totalHight;

return hight;

}

const hight1 = calcRectArea(6);

console.log(`door width and hight total area ${hight1} ft`); // expected output: 42 ft

function calcRectArea1(totalHight1) {

return 7 * totalHight1;

}

const hight2 = calcRectArea1(5);

console.log(`door width and hight total area ${hight2} ft`); // expected output: 35 ft

// example 4 total kg

function calKg(apple, orange, grapes) {

const fruit = apple * 2 + orange * 3 + grapes * 2;

return fruit;

}

const fruits = calKg(1, 1, 1);

console.log(`total ${fruits} kg fruits`);

// short code

function calKg1(apple1, orange1, grapes1) {

return apple1 * 5 + orange1 * 5 + grapes1 * 5;

}

const fullFruit = calKg1(1, 1, 1);

console.log(`total ${fullFruit} kg fruits`);

// example 5

function temp(celsius) {

const temp2 = (5 / 6) * celsius;

return temp2;

}

const toTemp = temp(30);

console.log(`total temperature is ${toTemp} Celsius`);

// 2. Function Expression

// example 1

const calculateAgeNew = function (birthYear5) {

return 2022 - birthYear5;

};

const age6 = calculateAgeNew(1992);

console.log(age6);

// example 2

const fruitBox = function (apple5, orange5, grapes5) {

return apple5 * 22 + orange5 * 23 + grapes5 * 22;

};

const fruit12 = fruitBox(1, 1, 1);

console.log(`total ${fruit12} kg fruits`);

// example 3

const door = function (totalHight11) {

return 7 * totalHight11;

};

const doorHightNew = door(5);

console.log(`door width and hight total area ${doorHightNew} ft`);

// example 4

const jobLeft = function (birthYear9) {

const age3 = 2022 - birthYear9;

const ageLeft = 60 - age3;

return ageLeft;

};

const ageJob = jobLeft(1988);

console.log(`job left ${ageJob}`);

// example 5

const temp22 = function (celsius) {

return (5 / 6) * celsius;

};

const temp2 = temp22(30);

console.log(`total temperature is ${temp2} Celsius`);

// Different between Function declaration vs Function Expression!!

// example Function Declaration

// in function decleration we can call the function before { its call hosting}

const ageAnik1 = calculateAgeAnik(1993);

function calculateAgeAnik(birthYear) {

const ageAnik = 2022 - birthYear;

return ageAnik;

}

console.log(`anik age is ${ageAnik1} `); // expected output: 29

// in function expression first you have to write you function then we can call

// example Function expression

// it will give ERROR !!

// const ageBala1 = ageBala(1996);

// const ageBala = function (birthYear6) {

// return 2022 - birthYear6;

// };

// console.log(`Bala age is ${ageBala1} `);

// function expression correct way

const ageBala2 = function (birthYear7) {

return 2022 - birthYear7;

};

const ageBala7 = ageBala2(1996);

console.log(`Bala age is ${ageBala7} `);

// Arrow Function

// example 1

const calculateAgeOfc = (birthYear10) => {

return 2022 - birthYear10;

};

const age4 = calculateAgeOfc(1992);

console.log(age4); // expected output: 30

// example 2

// const jobLeft1 = (birthYear2) => {

// const age5 = 2022 - birthYear2;

// const agejob = 62 - age5;// we can write this code in one line showen below example

// return agejob;// we can write this code in one line showen below example

// };

// const ageLeft = jobLeft1(1976);

// console.log(`job left ${ageLeft}`);

// example 2 with short code with {DRY} dry means don't repet yourself!!

const jobLeft1 = (birthYear2) => {

const age5 = 2022 - birthYear2;

return 62 - age5;

};

const ageLeft = jobLeft1(1976);

console.log(`job left ${ageLeft}`);

// example 3

const fruitBox1 = (apple, orange5, grapes5) => {

return apple * 23 + orange5 * 12 + grapes5 * 11;

};

const fruitbox = fruitBox1(1, 1, 1);

console.log(`total ${fruitbox} kg fruits`);

// example 4

// example 5

const temp5 = (celsius) => {

return (5 / 6) * celsius;

};

const temp3 = temp5(30);

console.log(`total temperature is ${temp3} Celsius`);

// ARRAY

const student = ["Anik", "Rakib", "sakib"];

console.log(student);

// if you want to show indivisual name

//Array indexes start with 0:

console.log(student[0]);

// another way of writing ARRAY

const players = new Array("tamim", "sakib", "musfiq", "miraz");

console.log(players[0]);

console.log(players[(1, 2)]);

const newFruit = new Array(

"mango",

"jackfruit",

"watermelon",

"Banana",

"Lemon"

);

console.log(newFruit);

// replace name in array

newFruit[0] = "leache";

console.log(newFruit);

// with .length we can get how many data is in the array

console.log(newFruit.length);

// Get Array Last Item

const arr2 = ["Emil", "Tobias", "Linus"];

console.log(arr2[arr2.length - 1]);

const arr3 = new Array("Emil", "Tobias", "Linus", "Peter");

console.log(arr3[arr3.length - 1]);

// in array we can store different type of data

const user = ["Anik", "Ahmed", 1993, 2022 - 1993, "web-Developer"];

console.log(user);

console.log(user[0]);

// Array Method

const user1 = ["Anik", "Ahmed", 1993, 2022 - 1993, "web-Developer"];

// push method

// to add last item

user1.push("javaScript");

console.log(user1);

// unshift

// to add in first position

user1.unshift("First Name");

console.log(user1);

// pop

// to delete last item

user1.pop();

console.log(user1);

// shift

// delete First item

user1.shift();

console.log(user1);

const user2 = ["Amit", "Ahamed", 2002, 2022 - 2001, "graphic-Designer"];

// shift

const removeItem = user2.shift();

console.log(removeItem);

//unshift

//add first item

user2.unshift("ISHAN");

console.log(user2);

// to delete last item

const removeItems = user2.pop();

console.log(removeItems);

javaScript_class_six/script.js at main · anikahamedofc/javaScript_class_six · GitHub

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