01. 배열 속성 : length :배열 안의 길이 구하기 : 반환(숫자)

length 속성은 배열의 길이를 구할 수 있다.

번호 기본값 메서드 리턴값 
const arrNum = [100, 200, 300, 400, 500];

document.querySelector(".sample01_N1").innerHTML = "1";
document.querySelector(".sample01_Q1").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample01_M1").innerHTML = "length";
document.querySelector(".sample01_P1").innerHTML = arrNum.length;


const arrTxt = ['a', 'b', 'c', 'd', 'e'];

document.querySelector(".sample01_N2").innerHTML = "2";
document.querySelector(".sample01_Q2").innerHTML = "['a', 'b', 'c', 'd', 'e']";
document.querySelector(".sample01_M2").innerHTML = "length";
document.querySelector(".sample01_P2").innerHTML = arrTxt.length;

const arr = [1, 2,['a', 'b']];

document.querySelector(".sample01_N3").innerHTML = "3";
document.querySelector(".sample01_Q3").innerHTML = "[1, 2,['a', 'b']]";
document.querySelector(".sample01_M3").innerHTML = "length";
document.querySelector(".sample01_P3").innerHTML = arr.length;

02. 배열 메서드 : join() : 배열 요소 문자열을 결합 :반환(문자열)

length 속성은 배열의 길이를 구할 수 있다.

번호 기본값 메서드 리턴값 
const arrNum = [100, 200, 300, 400, 500];
const text1 = arrNum.join('');
const text2 = arrNum.join(' ');
const text3 = arrNum.join('★');
const text4 = arrNum.join('-');

03. 배열 메서드 : push() / pop()

push() 메서드는 배열 마지막 요소에 추가하고, pop() 메서드는 배열 마지막 요소를 삭제한다.

번호 기본값 메서드 리턴값 결과값 
const arrNum = [100, 200, 300, 400, 500];
const arrPush = arrNum.push(600);

document.querySelector(".sample03_N1").innerHTML = "1";
document.querySelector(".sample03_Q1").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample03_M1").innerHTML = "push(600)";
document.querySelector(".sample03_P1").innerHTML = arrPush; //6
document.querySelector(".sample03_A1").innerHTML = arrNum;  //100, 200, 300, 400, 500, 600

const arrNum2 = [100, 200, 300, 400, 500];
const arrPush2 = arrNum2.pop();

document.querySelector(".sample03_N2").innerHTML = "2";
document.querySelector(".sample03_Q2").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample03_M2").innerHTML = "pop()";
document.querySelector(".sample03_P2").innerHTML = arrPush2;  //500
document.querySelector(".sample03_A2").innerHTML = arrNum2;  //100, 200, 300, 400

04. 배열 메서드 : unshift() / shift()

unshift() 메서드는 배열 처음 요소에 추가 / shift() 메서드는 배열 처음 요소에 삭제

번호 기본값 메서드 리턴값 결과값 
const arrNum1 = [100, 200, 300, 400, 500];
const arrNumUnshift = arrNum1.unshift(600);

document.querySelector(".sample04_N1").innerHTML = "1";
document.querySelector(".sample04_Q1").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample04_M1").innerHTML = "unshift()";
document.querySelector(".sample04_P1").innerHTML = arrNumUnshift;
document.querySelector(".sample04_A1").innerHTML = arrNum1;

const arrNum2 = [100, 200, 300, 400, 500];
const arrNumShift = arrNum2.shift();

document.querySelector(".sample04_N2").innerHTML = "2";
document.querySelector(".sample04_Q2").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample04_M2").innerHTML = "shift()";
document.querySelector(".sample04_P2").innerHTML = arrNumShift;
document.querySelector(".sample04_A2").innerHTML = arrNum2;

05. 배열 메서드 : reverse() / sort()

reverse() 메서드는 순서를 반대로 / sort() 메서드는 배열 요소를 정렬

번호 기본값 메서드 리턴값 
const arrNum1 = [100, 200, 300, 400, 500];
const arrNumReverse = arrNum1.reverse(600);

document.querySelector(".sample05_N1").innerHTML = "1";
document.querySelector(".sample05_Q1").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample05_M1").innerHTML = "reverse()";
document.querySelector(".sample05_P1").innerHTML = arrNumReverse;

const arrNum2 = [100, 200, 300, 400, 500];
const arrNumSort2 = arrNum2.sort();

document.querySelector(".sample05_N2").innerHTML = "2";
document.querySelector(".sample05_Q2").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample05_M2").innerHTML = "sort()";
document.querySelector(".sample05_P2").innerHTML = arrNumSort2;

const arrNum3 = [100, 200, 300, 400, 500];
const arrNumSort3 = arrNum3.sort(function( a , b ){return b - a });

document.querySelector(".sample05_N3").innerHTML = "3";
document.querySelector(".sample05_Q3").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample05_M3").innerHTML = "sort(function( a , b ){return b - a })";
document.querySelector(".sample05_P3").innerHTML = arrNumSort3;

const arrNum4 = [500, 400, 300, 200, 100];
const arrNumSort4 = arrNum4.sort(function( a , b ){return a - b });

document.querySelector(".sample05_N4").innerHTML = "4";
document.querySelector(".sample05_Q4").innerHTML = "[500, 400, 300, 200, 100]";
document.querySelector(".sample05_M4").innerHTML = "sort(function( a , b ){return a - b })";
document.querySelector(".sample05_P4").innerHTML = arrNumSort4;

const arrNum5 = ['c', 'b', 'e', 'w', 'h'];
const arrNumSort5 = arrNum5.sort(function( a , b ){ return a.localeCompare(b) });

document.querySelector(".sample05_N5").innerHTML = "5";
document.querySelector(".sample05_Q5").innerHTML = "['c', 'b', 'e', 'w', 'h']";
document.querySelector(".sample05_M5").innerHTML = "sort(function( a , b ){ return a.localeCompare(b) })";
document.querySelector(".sample05_P5").innerHTML = arrNumSort5;

const arrNum6 = ['c', 'b', 'e', 'w', 'h'];
const arrNumSort6 = arrNum5.sort(function( a , b ){ return b.localeCompare(a) });

document.querySelector(".sample05_N6").innerHTML = "6";
document.querySelector(".sample05_Q6").innerHTML = "['c', 'b', 'e', 'w', 'h']";
document.querySelector(".sample05_M6").innerHTML = "sort(function( a , b ){ return b.localeCompare(a) })";
document.querySelector(".sample05_P6").innerHTML = arrNumSort6;

06. 배열 메서드 : concat() : 펼침연산자 : 배열요소 결합

번호 기본값 메서드 리턴값 
const arrNum1 = [100, 200, 300];
const arrNum2 = [400, 500, 600];
const arrConcat = arrNum1.concat(arrNum2);

document.querySelector(".sample06_N1").innerHTML = "1";
document.querySelector(".sample06_Q1").innerHTML = "[100, 200, 300], [400, 500, 600]";
document.querySelector(".sample06_M1").innerHTML = "arrNum1.concat(arrNum2)";
document.querySelector(".sample06_P1").innerHTML = arrConcat;

const arrSpered = [...arrNum1, ...arrNum2];

document.querySelector(".sample06_N2").innerHTML = "2";
document.querySelector(".sample06_Q2").innerHTML = "[100, 200, 300], [400, 500, 600]";
document.querySelector(".sample06_M2").innerHTML = "[...arrNum1, ...arrNum2]";
document.querySelector(".sample06_P2").innerHTML = arrSpered;

06. 배열 메서드 : reduce() : 펼침연산자 : 배열요소 결합

번호 기본값 메서드 리턴값 
const arrNum1 = [100, 200, 300, 400, 500];
const arrNumReduce1 = arrNum1.reduce(element => element);
document.querySelector(".sample07_N1").innerHTML = "1";
document.querySelector(".sample07_Q1").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample07_M1").innerHTML = "reduce(element => element)";
document.querySelector(".sample07_P1").innerHTML = arrNumReduce1; //100

const arrNum2 = [100, 200, 300, 400, 500];
const arrNumReduce2 = arrNum1.reduce( (p,c) => p + c);
document.querySelector(".sample07_N2").innerHTML = "2";
document.querySelector(".sample07_Q2").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample07_M2").innerHTML = "reduce( (p,c) => p + c)";
document.querySelector(".sample07_P2").innerHTML = arrNumReduce2; //1500

const arrNum3 = [100, 200, 300, 400, 500];
let sum = 0;
for(let i=0; i<arrNum1.length; i++){
    sum += arrNum1[i];
};
document.querySelector(".sample07_N3").innerHTML = "3";
document.querySelector(".sample07_Q3").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample07_M3").innerHTML = "for()";
document.querySelector(".sample07_P3").innerHTML = sum; //1500

const arrNum4 = [[100,200],[300,400]];
const arrNumReduce4 = arrNum4.reduce((p,c) => p.concat(c));
document.querySelector(".sample07_N4").innerHTML = "4";
document.querySelector(".sample07_Q4").innerHTML = "[[100,200],[30,400]]";
document.querySelector(".sample07_M4").innerHTML = "reduce((p,c) => p.concat(c))";
document.querySelector(".sample07_P4").innerHTML = arrNumReduce4; //100,200,300,400

const arrNum5 = ["javascript", "react", "vue"];
const arrNumReduce5 = arrNum5.reduceRight((p,c) => p+c);
document.querySelector(".sample07_N5").innerHTML = "5";
document.querySelector(".sample07_Q5").innerHTML = '["javascript", "react", "vue"]';
document.querySelector(".sample07_M5").innerHTML = "reduceRight((p,c) => p+c)";
document.querySelector(".sample07_P5").innerHTML = arrNumReduce5; //vuereactjavascript

08. 배열 메서드 : slice()

번호 기본값 메서드 리턴값 
const arrNum = [100, 200, 300, 400, 500];
const result = arrNum.slice(2);

document.querySelector(".sample08_N1").innerHTML = "1";
document.querySelector(".sample08_Q1").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample08_M1").innerHTML = "arrNum.slice(2)";
document.querySelector(".sample08_P1").innerHTML = result;

const result2 = arrNum.slice(2,3);

document.querySelector(".sample08_N2").innerHTML = "2";
document.querySelector(".sample08_Q2").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample08_M2").innerHTML = "arrNum.slice(2,3)";
document.querySelector(".sample08_P2").innerHTML = result2;

const result3 = arrNum.slice(2,4);

document.querySelector(".sample08_N3").innerHTML = "3";
document.querySelector(".sample08_Q3").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample08_M3").innerHTML = "arrNum.slice(2,4)";
document.querySelector(".sample08_P3").innerHTML = result3;

const result4 = arrNum.slice(2,5);

document.querySelector(".sample08_N4").innerHTML = "4";
document.querySelector(".sample08_Q4").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample08_M4").innerHTML = "arrNum.slice(2,5)";
document.querySelector(".sample08_P4").innerHTML = result4;

const result5 = arrNum.slice(-2);

document.querySelector(".sample08_N5").innerHTML = "5";
document.querySelector(".sample08_Q5").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample08_M5").innerHTML = "arrNum.slice(-2)";
document.querySelector(".sample08_P5").innerHTML = result5;

const result6 = arrNum.slice(-2, 5);

document.querySelector(".sample08_N6").innerHTML = "6";
document.querySelector(".sample08_Q6").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample08_M6").innerHTML = "arrNum.slice(-2, 5)";
document.querySelector(".sample08_P6").innerHTML = result6;

09. 배열 메서드 : splice() : 배열 요소를 다른 요소로 변경

번호 기본값 메서드 리턴값 결과값 
const arrNum = [100, 200, 300, 400, 500];
const result = arrNum.splice(2);

document.querySelector(".sample09_N1").innerHTML = "1";
document.querySelector(".sample09_Q1").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample09_M1").innerHTML = "arrNum.splice(2)";
document.querySelector(".sample09_P1").innerHTML = result;
document.querySelector(".sample09_A1").innerHTML = arrNum;

//원본값에 영향을 줌

const arrNum2 = [100, 200, 300, 400, 500];
const result2 = arrNum2.splice(2, 3);

document.querySelector(".sample09_N2").innerHTML = "2";
document.querySelector(".sample09_Q2").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample09_M2").innerHTML = "arrNum2.splice(2,3)";
document.querySelector(".sample09_P2").innerHTML = result2;
document.querySelector(".sample09_A2").innerHTML = arrNum2;

const arrNum3 = [100, 200, 300, 400, 500];
const result3 = arrNum3.splice(2, 3, 'javascript');

document.querySelector(".sample09_N3").innerHTML = "3";
document.querySelector(".sample09_Q3").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample09_M3").innerHTML = "arrNum3.splice(2,3, 'javascript')";
document.querySelector(".sample09_P3").innerHTML = result3;
document.querySelector(".sample09_A3").innerHTML = arrNum3;

const arrNum4 = [100, 200, 300, 400, 500];
const result4 = arrNum4.splice(1, 1, 'javascript');

document.querySelector(".sample09_N4").innerHTML = "4";
document.querySelector(".sample09_Q4").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample09_M4").innerHTML = "arrNum4.splice(1, 1, 'javascript')";
document.querySelector(".sample09_P4").innerHTML = result4;
document.querySelector(".sample09_A4").innerHTML = arrNum4;

const arrNum5 = [100, 200, 300, 400, 500];
const result5 = arrNum5.splice(1, 0, 'javascript');

document.querySelector(".sample09_N5").innerHTML = "5";
document.querySelector(".sample09_Q5").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample09_M5").innerHTML = "arrNum5.splice(1, 0, 'javascript')";
document.querySelector(".sample09_P5").innerHTML = result5;
document.querySelector(".sample09_A5").innerHTML = arrNum5;

const arrNum6 = [100, 200, 300, 400, 500];
const result6 = arrNum6.splice(0, 4, 'javascript');

document.querySelector(".sample09_N6").innerHTML = "6";
document.querySelector(".sample09_Q6").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample09_M6").innerHTML = "arrNum6.splice(0, 4, 'javascript')";
document.querySelector(".sample09_P6").innerHTML = result6;
document.querySelector(".sample09_A6").innerHTML = arrNum6;

10. 배열 메서드 : indexOf() /lastIndexOf() /includes()

번호 기본값 메서드 리턴값 
const arrNum = [100, 200, 300, 400, 500];
const arrIndex = arrNum.indexOf(200);

document.querySelector(".sample10_N1").innerHTML = "1";
document.querySelector(".sample10_Q1").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample10_M1").innerHTML = "arrNum.indexOf(200)";
document.querySelector(".sample10_P1").innerHTML = arrIndex;

const arrNum2 = [100, 200, 300, 400, 500];
const arrIndex2 = arrNum2.indexOf(300);

document.querySelector(".sample10_N2").innerHTML = "2";
document.querySelector(".sample10_Q2").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample10_M2").innerHTML = "arrNum.indexOf(200)";
document.querySelector(".sample10_P2").innerHTML = arrIndex2;

const arrNum3 = [100, 200, 300, 400, 500];
const arrIndex3 = arrNum3.indexOf(600);

document.querySelector(".sample10_N3").innerHTML = "3";
document.querySelector(".sample10_Q3").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample10_M3").innerHTML = "arrNum3.indexOf(600)";
document.querySelector(".sample10_P3").innerHTML = arrIndex3;

const arrNum4 = [100, 200, 300, 400, 200];
const arrIndex4 = arrNum4.lastIndexOf(200);

document.querySelector(".sample10_N4").innerHTML = "4";
document.querySelector(".sample10_Q4").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample10_M4").innerHTML = "arrNum4.lastindexOf(200)";
document.querySelector(".sample10_P4").innerHTML = arrIndex4;

const arrNum5 = [100, 200, 300, 400, 200];
const arrIndex5 = arrNum5.includes(200);

document.querySelector(".sample10_N5").innerHTML = "5";
document.querySelector(".sample10_Q5").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample10_M5").innerHTML = "arrNum5.includes(200)";
document.querySelector(".sample10_P5").innerHTML = arrIndex5;

const arrNum6 = [100, 200, 300, 400, 200];
const arrIndex6 = arrNum6.includes(600);

document.querySelector(".sample10_N6").innerHTML = "6";
document.querySelector(".sample10_Q6").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample10_M6").innerHTML = "arrNum6.includes(600)";
document.querySelector(".sample10_P6").innerHTML = arrIndex6;

11. 배열 메서드 : find() /findIndex()

번호 기본값 메서드 리턴값 
const arrNum = [100, 200, 300, 400, 500];
// const result = arrNum.find(function(element){
//     return element ===300;
// });

// const result = arrNum.find((element) => {
//     return element ===300;
// });

// const result = arrNum.find(element => {
//     return element ===300;
// });

const result = arrNum.find(e => e === 300);

document.querySelector(".sample11_N1").innerHTML = "1";
document.querySelector(".sample11_Q1").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample11_M1").innerHTML = "find(e => e === 300)";
document.querySelector(".sample11_P1").innerHTML = result;

const result2 = arrNum.find(e => e === 600);

document.querySelector(".sample11_N2").innerHTML = "2";
document.querySelector(".sample11_Q2").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample11_M2").innerHTML = "find(e => e === 300)";
document.querySelector(".sample11_P2").innerHTML = result2;

const arrText = ['javascirpt', 'jquery', 'react'];
const result3 = arrText.find(el => el === 'javascirpt');

document.querySelector(".sample11_N3").innerHTML = "3";
document.querySelector(".sample11_Q3").innerHTML = "['javascirpt', 'jquery', 'react']";
document.querySelector(".sample11_M3").innerHTML = "arrText.find(el => el ==='javascirpt')";
document.querySelector(".sample11_P3").innerHTML = result3;

const result4 = arrText.findIndex(el => el === "javascirpt");

document.querySelector(".sample11_N4").innerHTML = "4";
document.querySelector(".sample11_Q4").innerHTML = "['javascirpt', 'jquery', 'react']";
document.querySelector(".sample11_M4").innerHTML = "arrText.find(el => el ==='javascirpt')";
document.querySelector(".sample11_P4").innerHTML = result4;

const result5 = arrText.findIndex(el => el === "html");

document.querySelector(".sample11_N5").innerHTML = "5";
document.querySelector(".sample11_Q5").innerHTML = "['javascirpt', 'jquery', 'react']";
document.querySelector(".sample11_M5").innerHTML = "arrText.findIndex(el => el ==='javascirpt')";
document.querySelector(".sample11_P5").innerHTML = result5;

12. 배열 메서드 : filter()

번호 기본값 메서드 리턴값 
 const arrNum = [100, 200, 300, 400, 500];
const result = arrNum.filter(el => el ===300 );


document.querySelector(".sample12_N1").innerHTML = "1";
document.querySelector(".sample12_Q1").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample12_M1").innerHTML = "arrNum.filter(el => el ===300 )";
document.querySelector(".sample12_P1").innerHTML = result;

const arrNum2 = [100, 200, 300, 400, 500];
const result2 = arrNum2.filter(el => el ===600 );


document.querySelector(".sample12_N2").innerHTML = "2";
document.querySelector(".sample12_Q2").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample12_M2").innerHTML = "arrNum.filter(el => el ===600 )";
document.querySelector(".sample12_P2").innerHTML = result2;

const arrNum3 = [100, 200, 300, 400, 500];
const result3 = arrNum3.filter(el => el >= 300 );


document.querySelector(".sample12_N3").innerHTML = "4";
document.querySelector(".sample12_Q3").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample12_M3").innerHTML = "arrNum3.filter(el => el >= 300 )";
document.querySelector(".sample12_P3").innerHTML = result3;

13. 배열 메서드 : map()

번호 기본값 메서드 리턴값 
const arrNum = [100, 200, 300, 400, 500];
const result = arrNum.map(el => el);


document.querySelector(".sample13_N1").innerHTML = "1";
document.querySelector(".sample13_Q1").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample13_M1").innerHTML = "arrNum.map(el => el)";
document.querySelector(".sample13_P1").innerHTML = result;

const arrNum2 = [100, 200, 300, 400, 500];
const result2 = arrNum2.map(el => el + "j");


document.querySelector(".sample13_N2").innerHTML = "2";
document.querySelector(".sample13_Q2").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample13_M2").innerHTML = "arrNum2.map(el => el + 'j')";
document.querySelector(".sample13_P2").innerHTML = result2;

const arrNum3 = [100, 200, 300, 400, 500];
const result3 = arrNum3.map(el => el + 100);


document.querySelector(".sample13_N3").innerHTML = "3";
document.querySelector(".sample13_Q3").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample13_M3").innerHTML = "arrNum3.map(el => el + 100)";
document.querySelector(".sample13_P3").innerHTML = result3;

const arrNum4 = [{a:100},{a:200},{a:300}];
const result4 = arrNum4.map(el => el.a);


document.querySelector(".sample13_N4").innerHTML = "4";
document.querySelector(".sample13_Q4").innerHTML = "[100, 200, 300, 400, 500]";
document.querySelector(".sample13_M4").innerHTML = "arrNum4.map(el => el.a)";
document.querySelector(".sample13_P4").innerHTML = result4;

14. 배열 메서드 : Array.from()

번호 기본값 메서드 리턴값 
const text = "javascript";
const result = Array.from(text);

document.querySelector(".sample14_N1").innerHTML = "1";
document.querySelector(".sample14_Q1").innerHTML = "javascript";
document.querySelector(".sample14_M1").innerHTML = "Array.from(text)";
document.querySelector(".sample14_P1").innerHTML = result;
console.log(result);

const text2 = "javascript";
const result2 = Array.from(text2, el => el + "10");

document.querySelector(".sample14_N2").innerHTML = "2";
document.querySelector(".sample14_Q2").innerHTML = "javascript";
document.querySelector(".sample14_M2").innerHTML = "Array.from(text2, el => el + '10')";
document.querySelector(".sample14_P2").innerHTML = result2;
console.log(result2);

const text3 = "javascript";
const result3 = [...text3].map(el => el);

document.querySelector(".sample14_N3").innerHTML = "3";
document.querySelector(".sample14_Q3").innerHTML = "javascript";
document.querySelector(".sample14_M3").innerHTML = "[...text3].map(el => el)";
document.querySelector(".sample14_P3").innerHTML = result3;
console.log(result3);