Node.Js Essentials Hands-On Solutions | TCS Fresco Play
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Make an effort to understand these solutions and apply them to your Hands-On difficulties. (It is not advisable that copy and paste these solutions).
All Question of the Hands-On Present Below for Ease Use Ctrl + F with the question name to find the Question. All the Best!
1. Fibonacci Series
Path: NodeJs/Node Js Essentials/fibonacci-series/fibonacci.js
let n1 = 0, n2 = 1, nextTerm;
let s = 0;
for (let i = 1; n1 <= 4000000; i++) {
if(n1 % 2 == 0){
s += n1
}
nextTerm = n1 + n2;
n1 = n2;
n2 = nextTerm;
}
console.log(s);
2. Largest Prime Factor
Path: NodeJs/Node Js Essentials/largest-prime-factor/app.js
var divisor = 2;
var number = 600851475143;
while(number > 1){
if(number % divisor === 0){
number /= divisor;
} else {
divisor++;
}
}
console.log(divisor);
3. Palindrome
Path: NodeJs/Node Js Essentials/palindrome/palindrome.js
function largestPalindrome(){
var arr = [];
for(var i =999; i>100; i--){
for(var j = 999; j>100; j--){
var mul = j*i;
if(isPalin(mul)){
arr.push(j * i);
}
}
}
return Math.max.apply(Math, arr);
}
function isPalin(i){
return i.toString() == i.toString().split("").reverse().join("");
}
console.log(largestPalindrome());
4. Evenly Divisible
Path: NodeJs/Node Js Essentials/evenly-divisible/divisible.js
function gcd(a, b)
{
if(a%b != 0)
return gcd(b,a%b);
else
return b;
}
// Function returns the lcm of first n numbers
function lcm(n)
{
let ans = 1;
for (let i = 1; i <= n; i++)
ans = (ans * i)/(gcd(ans, i));
return ans;
}
// function call
let n = 20;
console.log(lcm(n));
5. Sum of Squares
Path : NodeJs/Node Js Essentials/sum-of-squares/App.js
let sum = 0, sum_sq = 0;
for (let i = 1; i <= 100; i++){
sum += i;
sum_sq += i*i;
}
console.log(Math.abs(sum_sq - sum*sum))
6. Nth Prime Number
Path: NodeJs/Node Js Essentials/neth-prime/App.js
const findPrime = num => {
let i, primes = [2, 3], n = 5;
const isPrime = n => {
let i = 1, p = primes[i],
limit = Math.ceil(Math.sqrt(n));
while (p <= limit) {
if (n % p === 0) {
return false;
}
i += 1;
p = primes[i];
}
return true;
}
for (i = 2; i <= num; i += 1) {
while (!isPrime(n)) {
n += 2;
}
primes.push(n);
n += 2;
};
return primes[num - 1];
}
console.log(findPrime(10001));
7. Pythagorean Triplets
Path: NodeJs/Node Js Essentials/pythagorean-triplets/App.js
function findProd() {
for (let i = 1; i <= 1000; i++) {
for (let j = 1; j <= 1000; j++) {
const k = 1000 - i - j;
if (i * i + j * j == k * k) {
return i * j * k;
}
}
}
}
console.log(findProd())
8. Sum of Primes
Path: NodeJs/Node Js Essentials/sum-of-primes/App.js
const isPrime = num => {
for(let i = 2, s = Math.sqrt(num); i <= s; i++)
if(num % i === 0) return false;
return num > 1;
}
let sum = 0;
for(let i=2; i < 2000000; i++){
if(isPrime(i)){
sum += i;
}
}
console.log(sum)
9. Sum of Multiples
Path: NodeJs/Node Js Essentials/sum-of-multiples/App.js
var sum = 0;
var number = 1000;
for (var i = 0; i < number; i++) {
if (i % 3 == 0 || i % 5 == 0) {
sum += i;
}
}
console.log(sum);
10. Events Working With Files
Path: NodeJs/Node Js Essentials/events-working-with-files/App.js
const fs = require('fs')
fs.readFile('To_Read.txt', 'utf8' , (err, data) => {
if (err) {
console.error(err)
return
}
console.log(data)
})
11. Stream Reading Files
Path: NodeJs/Node Js Essentials/stream-reading-files/app.js
var fs = require("fs");
var data = '';
// Create a readable stream
var readerStream = fs.createReadStream('Node-stream-handson/data_file.txt');
// Set the encoding to be utf8.
readerStream.setEncoding('UTF8');
// Handle stream events --> data, end, and error
readerStream.on('data', function(chunk) {
data += chunk;
console.log(chunk.length);
});
readerStream.on('end',function() {
// console.log(data);
console.log(data.length);
});
readerStream.on('error', function(err) {
console.log(err.stack);
});
console.log("Program Ended");
12. Stream Writing Files
Path: NodeJs/Node Js Essentials/stream-writing-files/App.js
var fs = require("fs");
var data = 'Node.js is an ultimate backend javascript for backend developement';
// Create a writable stream
var writerStream = fs.createWriteStream('Big_data.txt');
for (let i = 0; i < 10 ^ 5; i++) {
writerStream.write(data, 'UTF8');
}
// Mark the end of file
writerStream.end();
// Handle stream events --> finish, and error
writerStream.on('finish', function () {
console.log("Write completed.");
});
writerStream.on('error', function (err) {
console.log(err.stack);
});
13. Stream File Copy
Path: NodeJs/Node Js Essentials/stream-file-copy/App.js
var fs = require("fs");
// Create a readable stream
var readerStream = fs.createReadStream('data_file.txt');
// Create a writable stream
var writerStream = fs.createWriteStream('new_data_file.txt');
// Pipe the read and write operations
// read input.txt and write data to output.txt
readerStream.pipe(writerStream);
14. App Build Posting Data
Path: NodeJs/Node Js Essentials/app-build-posting-data/server.js
const http = require('http');
const url = require('url');
const fs = require('fs');
const querystring = require('querystring');
const server = http.createServer((req, res) => {
const urlparse = url.parse(req.url, true);
if (urlparse.pathname == '/' && req.method == 'POST') {
req.on('data', data => {
const jsondata = JSON.parse(data);
fs.writeFile('output.txt', data, err => {
if (err) {
console.error(err)
return
}
})
res.writeHead(200, { 'Content-Type': 'application/json' });
res.end(JSON.stringify(projects, null, 2));
});
}
});
server.listen(8000);
Path: NodeJs/Node Js Essentials/app-build-routing-2/server.js
const http = require('http');
const server = http.createServer((req, res)=>{
const url = req.url;
if(url === '/hi'){
res.writeHead(200);
res.write('Welcome Home');
}else if (url === '/hello'){
res.write('HI TCSer');
res.writeHead(200);
}else{
res.write('404 File not found error');
res.writeHead(404);
}
return res.end();
});
server.listen(3000);
Path: NodeJs/Node Js Essentials/app-build-routing/router.js
#!/bin/bash
SCORE=0
PASS=0
fail=0
TOTAL_TESTS=1
TEST_1=$( cat router.js | grep -e "createServer" -e "res.writeHead" -e "Hi TCSer" -e "Hi Welcome" -e "Hello Buddy" | wc -l )
if [ $TEST_1 -ge 5 ]
then PASS=$((PASS + 1))
fi;
echo "Total testcases: 1"
echo "Total testcase passed: $PASS"
echo "Total testcase fail: $fail"
SCORE=$(($PASS*100 / $TOTAL_TESTS))
echo "FS_SCORE:$SCORE%"
Path: NodeJs/Node Js Essentials/app-build-server-setup/server.js
const http = require('http');
const server = http.createServer((req, res)=>{
const url = req.url;
if(url === '/hi'){
res.writeHead(200);
res.write('Hi Welcome');
}else if (url === '/hello'){
res.write('Hello Buddy');
res.writeHead(200);
}else{
res.write('404 File not found error');
res.writeHead(404);
}
return res.end();
});
server.listen(3000);
15. Events HTTP Module
Path: NodeJs/Node Js Essentials/events-http-module/app.js
const http = require('http');
const fs = require('fs')
const server = http.createServer((req, res)=>{
fs.readFile('sample.html', 'utf8' , (err, data) => {
if (err) {
console.error(err)
return
}
res.write(data);
res.end();
})
});
server.listen(8000);
Path: NodeJs/Node Js Essentials/events-http-module/sample.html
<!DOCTYPE html>
<html lang="en">
<body>
<h2>Welcome ! what would oyu like to have</h2>
<ul>
<li>Cofee</li>
<li>Tea</li>
<li>Milk</li>
</ul>
</body>
</html>
Path: NodeJs/Node Js Essentials/events-simple-http-module/app.js
const http = require('http');
const server = http.createServer((req, res)=>{
res.write('Hello World');
res.end();
})
});
server.listen(8000);
Path: NodeJs/Node Js Essentials/events-working-with-custom-events/app.js
var events = require('events');
var eventEmitter = new events.EventEmitter();
//Create an event handler:
var Myfunc = function () {
console.log('HI THERE ! HAPPY LEARNING');
}
//Assign the event handler to an event:
eventEmitter.on('MyEvent', Myfunc);
//Fire the 'scream' event:
eventEmitter.emit('MyEvent');
16. Handling Requests
Path: NodeJs/Node Js Essentials/handling-requests/App.js
var http = require('http');
// Create a server object
http.createServer(function (req, res) {
// http header
res.writeHead(200, {'Content-Type': 'text/html'});
var url = req.url;
if(url ==='/') {
res.write(`
<form method="post" action="submit">
<input type=text name=first>
<input type=text name=first>
<button>Submit</button>
</form>
`);
res.end();
}
else if(url ==='/contact') {
res.write(' Welcome to contact us page');
res.end();
}
else {
res.write('Hello World!');
res.end();
}
}).listen(3000, function() {
// The server object listens on port 3000
console.log("server start at port 3000");
});
Path: NodeJs/Node Js Essentials/handling-requests/handlers.js
var http = require('http');
// Create a server object
http.createServer(function (req, res) {
// http header
res.writeHead(200, {'Content-Type': 'text/html'});
var url = req.url;
if(url ==='/') {
res.write(`
<form method="post" action="submit">
<input type=text name=first>
<input type=text name=first>
<button>Submit</button>
</form>
`);
res.end();
}
else if(url ==='/contact') {
res.write(' Welcome to contact us page');
res.end();
}
else {
res.write('Hello World!');
res.end();
}
}).listen(3000, function() {
// The server object listens on port 3000
console.log("server start at port 3000");
});
Path: NodeJs/Node Js Essentials/handling-requests/routers.js
var http = require('http');
// Create a server object
http.createServer(function (req, res) {
// http header
res.writeHead(200, {'Content-Type': 'text/html'});
var url = req.url;
if(url ==='/') {
res.write(`
<form method="post" action="submit">
<input type=text name=first>
<input type=text name=first>
<button>Submit</button>
</form>
`);
res.end();
}
else if(url ==='/contact') {
res.write(' Welcome to contact us page');
res.end();
}
else {
res.write('Hello World!');
res.end();
}
}).listen(3000, function() {
// The server object listens on port 3000
console.log("server start at port 3000");
});
Path: NodeJs/Node Js Essentials/handling-requests/server.js
var http = require('http');
// Create a server object
http.createServer(function (req, res) {
// http header
res.writeHead(200, {'Content-Type': 'text/html'});
var url = req.url;
if(url ==='/') {
res.write(`
<form method="post" action="submit">
<input type=text name=first>
<input type=text name=first>
<button>Submit</button>
</form>
`);
res.end();
}
else if(url ==='/contact') {
res.write(' Welcome to contact us page');
res.end();
}
else {
res.write('Hello World!');
res.end();
}
}).listen(3000, function() {
// The server object listens on port 3000
console.log("server start at port 3000");
});
17. Https Requests
Path: NodeJs/Node Js Essentials/https-requests/app.js
const https = require('https')
const options = {
hostname: 'en.wikipedia.org',
port: 443,
path: '/dwiki/Nodejs',
method: 'GET'
}
const req = https.request(options, res => {
console.log(`statusCode: ${res.statusCode}`)
res.on('data', d => {
process.stdout.write(d)
})
})
req.on('error', error => {
console.error(error)
})
req.end()
Extras
18. Addition
Path: NodeJs/Node Js Essentials/addition.js
console.log(parseInt(process.argv[2])+parseInt(process.argv[3]));
19. Callback
Path: NodeJs/Node Js Essentials/callback.js
let sum=0;
for(let i=3; i<=1000; i++){
if(i%3==0){
sum += i
}
if(i%5==0){
sum+=i
}
}
setTimeout(()=>console.log(sum), 1000);
20. Module
Path: NodeJs/Node Js Essentials/module.js
// app.js
const m = require('./module');
const readline = require('readline');
let r1 = readline.createInterface(process.stdin, process.stdout);
r1.question("first number", n1 =>{
r1.question("second number", n2 =>{
console.log(m.add(n1,n2));
console.log(m.multiply(n1,n2));
})
})
// module.js
module.exports.add = (a,b) => {
return a+b;
}
module.exports.multiply = (a,b)=>{
return a+b
}
20. Timer 1
Path: NodeJs/Node Js Essentials/timer1.js
function print(){
console.log("TCS");
}
setInterval(print, 5000);
21. Timer 2
Path: NodeJs/Node Js Essentials/timer2.js
function print(){
console.log("TCS");
}
setTimeout(print, 2000);
22. Timer 3
Path: NodeJs/Node Js Essentials/timer3.js
function print(){
console.log("TCS");
}
function stop(){
clearInterval(t)
}
const t = setInterval(print, 2000);
setTimeout(stop, 10000);
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69 comments
https://github.com/csrohit/fresco-play/tree/main/NodeJs/Node%20Js%20Essentials
process.stdin.setEncoding("ascii");
_input = "";
process.stdin.on("data", function (input) {
_input += input;
});
process.stdin.on("end", function () {
logString(_input);
});
function logString(stringToLog) {
setTimeout(info, 0, stringToLog);
setTimeout(log, 800, stringToLog);
setTimeout(log, 1300, stringToLog);
setTimeout(log, 1800, stringToLog);
setTimeout(log, 2300, stringToLog);
setTimeout(log, 2800, stringToLog);
}
function log(stringToLog){
console.log(stringToLog);
}
function info(stringToLog){
console.log("Logging "+ stringToLog +" every 0.5 seconds");
}
//Enter your code here
console.log("Logging "+ stringToLog +" every 0.5 seconds");
}
function print(input){
console.log(input);
}
function stop(){
clearInterval(t)
}
const t = setInterval(print, 500,_input);
setTimeout(stop, 3000);
console.log("Logging "+ stringToLog +" every 0.5 seconds");
}
function print(input){
console.log(_input);
}
function stop(){
clearInterval(t)
}
const t = setInterval(print, 500,_input);
setTimeout(stop, 3000);
process.stdin.on("end", function () {
const EventEmitter=require('events');
let data=input.split(" ");
n1=data[0];
n2=data[1];
// console.log(n1,n2);
let result=0;
const sum=()=>{
for(let i=0;i<=1000;i++)
{
if(i%n1==0)
{
result+=i;
}
}
for(let j=0;j<=1000;j++)
{
if(j%n2==0)
{
result+=j;
}
}
console.log(result);
}
setTimeout(sum,2000);
const event=new EventEmitter();
event.on("MyEvent",()=>{
console.log(`Multiples of ${n1} & ${n2}`);
})
event.emit("MyEvent");
});
//write your code within the function
input = input.replace(/\W/g, '').toLowerCase();
var result = (input.toString() == input.toString().split("").reverse().join(""));
console.log(result);
});
const url = require("url");
const funcMap = {
add: (a, b) => {
return `Addition is: ${a + b}`;
},
subtract: (a, b) => {
return `Subtraction is: ${a - b}`;
},
multiple: (a, b) => {
return `Multiplication is: ${a * b}`;
},
div: (a, b) => {
return `Division is: ${a / b}`;
},
};
http.createServer((req, response) => {
response.writeHead(200, {
"Content-Type": "text/html"
});
req.setEncoding("utf-8");
let urlhandler = url.parse(req.url, true);
let pathname = urlhandler.pathname;
let {
func,
a,
b
} = urlhandler.query;
if (pathname === "/cal") {
if (func == undefined) {
response.write(funcMap["div"](+a, +b));
} else {
response.write(funcMap[func](+a, +b));
}
}
response.end();
})
.listen(8000);
Plz give the solution for sort and search
app.js
--------------------------------------
//import the 'fs' and 'maths.js' module
//read the content of 'input.txt' file and copy the content to 'duplicate.txt' file
//call the 'sum and 'multiply' functions of maths module and store the return values in 'result' and 'product' variables
//write the content 'The sum of the numbers is: result. The product of the numbers is: product' to the 'output.txt' file
math.js
-----------------------------------------
// Create and export a module with two functions sum and multiply
// Both functions should two arguements and return the sum and product values
the instructions are the following:
app.js
--------------------------------------
//import the 'fs' and 'maths.js' module
//read the content of 'input.txt' file and copy the content to 'duplicate.txt' file
//call the 'sum and 'multiply' functions of maths module and store the return values in 'result' and 'product' variables
//write the content 'The sum of the numbers is: result. The product of the numbers is: product' to the 'output.txt' file
math.js
-----------------------------------------
// Create and export a module with two functions sum and multiply
// Both functions should two arguements and return the sum and product values
==========
const fs = require("fs");
var calculator = require('./maths');
var readerStream = fs.createReadStream('input.txt');
var writerStream = fs.createWriteStream('duplicate.txt');
readerStream.pipe(writerStream);
var a=10, b=5;
var result = 'The sum of the numbers is:' + calculator.add(a,b) + '. ';
var product = 'The product of the numbers is:' + calculator.multiply(a,b);
let data = result + product;
var writerStream = fs.createWriteStream('output.txt');
writerStream.write(data, 'UTF8');
writerStream.end();
Maths.js
exports.add = function (a, b) {
return a+b;
};
exports.multiply = function (a, b) {
return a*b;
};
plz help.
npm WARN ws@7.4.6 requires a peer of bufferutil@^4.0.1 but none is installed. You must install peer dependencies yourself.
npm WARN ws@7.4.6 requires a peer of utf-8-validate@^5.0.2 but none is installed. You must install peer dependencies yourself.
npm WARN file-handling-nodejs@1.0.0 No description
npm WARN file-handling-nodejs@1.0.0 No repository field.
audited 296 packages in 1.999s
found 0 vulnerabilities
> file-handling-nodejs@1.0.0 test /projects/challenge
> mocha --reporter mocha-junit-reporter
/projects/challenge/node_modules/yargs-parser/build/index.cjs:991
throw Error(`yargs parser supports a minimum Node.js version of ${minNodeVersion}. Read our version support policy: https://github.com/yargs/yargs-parser#supported-nodejs-versions`);
^
Error: yargs parser supports a minimum Node.js version of 10. Read our version support policy: https://github.com/yargs/yargs-parser#supported-nodejs-versions
at Object. (/projec…
var fs = require('fs');
var maths = require('./maths.js');
fs.readFile('input.txt', (err, data) => {
if (err) throw err;
fs.writeFile('duplicate.txt', data, (err) => {
if (err) throw err;
}
)
}
)
var result = maths.sum(2, 3);
var product = maths.multiply(2, 3);
fs.writeFile('output.txt', `The sum of the numbers is: ${result}. The product of the numbers is: ${product}`, (err) => {
if (err) throw err;
})
Maths.js
module.exports.sum = (a, b) => {
return a + b
};
module.exports.multiply = (a, b) => {
return a * b
};
Events- working with files
hands on-1 more on node.js (testing-palindrome)
App build-simple calculator
process.stdin.resume();
process.stdin.setEncoding("ascii");
var input = "";
process.stdin.on("data", function (chunk) {
input += chunk;
});
process.stdin.on("end", function () {
//write your code within the function
let input1 = input.toLowerCase();
let ans = checkPalindrome(input1);
//condition checking ans is true or not
if( ans == true )
{
console.log("true");
}
else
{
console.log("false");
}
});
// program to check if the string is palindrome or not
function checkPalindrome(string) {
// find the length of a string
const len = string.length;
// loop through half of the string
for (let i = 0; i < len / 2; i++) {
// check if first and last string are same
if (string[i] !== string[len - 1 - i]) {
return false;
}
}
return true;
}
Streams - Reading Files
Hands-on 1: More on node.js
Streams - Write to File
Hands-on 2: More on node.js
answer pls
process.stdin.resume();
process.stdin.setEncoding("ascii");
var input = "";
process.stdin.on("data", function (chunk) {
input += chunk;
});
process.stdin.on("end", function () {
//write your code within the function
let input1 = input.toLowerCase();
let ans = checkPalindrome(input1);
//condition checking ans is true or not
if( ans == true )
{
console.log("true");
}
else
{
console.log("false");
}
});
// program to check if the string is palindrome or not
function checkPalindrome(string) {
// find the length of a string
const len = string.length;
// loop through half of the string
for (let i = 0; i < len / 2; i++) {
// check if first and last string are same
if (string[i] !== string[len - 1 - i]) {
return false;
}
}
return true;
}
#################################################################
## Largest Prime Factor
process.stdin.resume();
process.stdin.setEncoding("ascii");
var input = "";
process.stdin.on("data", f…
const http = require("http");
const url = require("url");
const hostname = 'localhost';
const port = 8000;
const funcMap = {
add: (a, b) => {
return `Addition is: ${a + b}`;
},
subtract: (a, b) => {
return `Subtraction is: ${a - b}`;
},
multiple: (a, b) => {
return `Multiplication is: ${a * b}`;
},
div: (a, b) => {
return `Division is: ${a / b}`;
},
};
const server = http.createServer((req, res) => {
res.statusCode = 200;
res.setHeader('Content-Type', 'text/html');
let urlhandler = url.parse(req.url, true);
let pathname = urlhandler.pathname;
let { func, a, b } = urlhandler.query;
if (pathname === "/cal") {
if (func == undefined) {
res.write(funcMap["div"](+a, +b));
} else {
res.write(funcMap[func](+a, +b));
}
}
res.end();
});
server.listen(port, hostname, () => {
});
Do we have install something here
If yes what we have to?
Share the code for that.
Thanks in advance
const url = require('url');
const hostname = 'localhost';
const port = 8000;
const funcMap = {
add: (a, b) => {
return `Addition is: ${a + b}`;
},
subtract: (a, b) => {
return `Subtraction is: ${a - b}`;
},
multiple: (a, b) => {
return `Multiplication is: ${a * b}`;
},
div: (a, b) => {
return `Division is: ${a / b}`;
},
};
const server = http.createServer((req, res) => {
res.statusCode = 200;
res.setHeader('Content-Type', 'text/html');
let urlhandler = url.parse(req.url, true);
console.log(urlhandler);
let pathname = urlhandler.pathname;
let { func, a, b } = urlhandler.query;
if (pathname === "/cal") {
if (func == undefined) {
res.write(funcMap["div"](+a, +b));
} else {
res.write(funcMap[func](+a, +b));
}
}
res.end();
});
server.listen(port, hostname, () => {
});
Open Terminal and run "node App.js" and then "Run Tests", then it will pass all the test cases.
Solution is not passing test case.
Can anyone share the working code.
Solution plz
const https = require('https');
var fs = require('fs');
var writeStream = fs.createWriteStream('Node.html');
const options = {
hostname: 'en.wikipedia.org',
port: 443,
path: '/wiki/Nodejs',
method: 'GET',
};
const req = https.request(options, res => {
res.on('data', d => {
writeStream.write(d, 'UTF8');
});
});
writeStream.on('finish', () => {
writeStream.end();
});
req.end()
anyone??
answer anyone have..?
var https = require('https');
var fs = require('fs');
var options = {
hostname : "en.wikipedia.org",
port : 443,
path : "/wiki/Nodejs",
method : "GET"
};
var req = https.request(options, function(res){
var responseBody = "";
console.log('Response started!');
console.log(`Server status: ${res.statusCode}`);
console.log("Response header %j", res.headers);
res.setEncoding('UTF-8');
res.once('data', function(chunck){
console.log(chunck);
});
res.on('data', function(chunck){
console.log(`---chunck --- ${chunck.length}`);
responseBody+= chunck;
});
res.on("end", function(){
fs.writeFile('Node.html', responseBody, function(err){
if(err){
throw err;
}
console.log('file downloaded successfully');
});
})
});
// if there are error on the request
req.on('error', function(err){
console.log(`problem with re…
hostname : "en.wikipedia.org",
port : 443,
path : "/wiki/Nodejs",
method : "GET",
rejectUnauthorized: false
};
app.js
const fs = require("fs");
var calculator = require('./maths');
var readerStream = fs.createReadStream('input.txt');
var writerStream = fs.createWriteStream('duplicate.txt');
readerStream.pipe(writerStream);
var a=10, b=5;
var result = 'The sum of the numbers is:' + calculator.sum(a,b) + '. ';
var product = 'The product of the numbers is:' + calculator.multiply(a,b);
let data = result + product;
console.log(data);
--------------------------
maths.js
module.exports.sum = (a,b) => {
return (+a)+(+b);
}
module.exports.multiply = (a,b)=>{
return a*b
}
--------------
thank me later
import org.springframework.stereotype.Service;
import java.util.ArrayList;
import java.util.List;
@Service
public class UserServiceImp implements UserService{
private static Listlist=new ArrayList<>();
static{
User e =new User();
e.setId(1);
e.setUserId(222);
e.setTitle("Titulok 1");
e.setBody("Telo 1 ");
list.add(e);
e =new User();
e.setId(2);
e.setUserId(114);
e.setTitle("Titulok 2");
e.setBody("Telo 2 ");
list.add(e);
}
@Override
public List getUsers() {
return list;
}
}
import javax.persistence.*;
@Entity
@Table(name = "user")
public class User {
private Integer userID;
@Column(unique = true)
private String userName;
@Column(name="firstName")
private String firstName;
private String lastName;
@Column(unique=true)
private String mobileNumber;
@Column(unique = true)
private String emailID;
private String address1;
private String address2;
public User(){
}
public User(int userID) {
this.userID = userID;
}
public User(String userName) {
this.userName = userName;
}
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
public Integer getUserID() {
return userID;
}
public void setUserID(Integer userID) {
this.userID = userID;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getFirstName() {
return fi…