// List means array but with some difference

// Creating a List
let my_list = [];
console.log("Empty list:", my_list);

my_list = [1, 2, 3, 4, 5];
console.log("List with initial values:", my_list);


// Accessing List Elements
let element = my_list[0];
console.log("Element at index 0:", element);

let last_element = my_list[my_list.length - 1];
console.log("Last element:", last_element);


// Modifying List Elements
my_list[2] = 10;
console.log("List after updating element at index 2:", my_list);


// Adding Elements to the List
my_list.push(6);
console.log("List after appending element:", my_list);

my_list.splice(3, 0, 7);
console.log("List after inserting element at index 3:", my_list);

let another_list = [8, 9, 10];
my_list = my_list.concat(another_list);
console.log("List after extending with another list:", my_list);


// Removing Elements from the List
my_list = my_list.filter(item => item !== 4);
console.log("List after removing element 4:", my_list);

let removed_element = my_list.splice(2, 1);
console.log("List after removing element at index 2:", my_list);
console.log("Removed element:", removed_element[0]);

// Clear list
my_list = [];
console.log("List after clearing all elements:", my_list);

another_list = [8, 9, 10, 5, 7, 3, 9];
my_list = my_list.concat(another_list);
console.log("List after extending with another list:", my_list);

// Slicing a List
let sliced_list = my_list.slice(1, 3);
console.log("Sliced list from index 1 to 3 (exclusive):", sliced_list);

// sub_list
let sub_list = my_list.slice(2);
console.log("Sublist from index 2 till the end:", sub_list);

// reversed_list
let reversed_list = my_list.reverse();
console.log("Reversed list:", reversed_list);

// List Iteration
my_list.forEach(element => {
console.log("Element:", element);
});

my_list.forEach((element, index) => {
console.log("Index:", index, "Element:", element);
});

// Code by @Python_Codes_Pro
// buttons by @IOChannel_bot
// Run by @Compiler0bot
// for Group @CodeCompiler_Bot

Learn about list many methods given above 👆you can run it by run button
List is a type of array in js

let a = require('axios');
let url = "https://example.com";
let e = " excecuted"

a.get(url).then(r => console.log(0+e));
a.get(url).then(r => console.log(1+e));
a.get(url).then(r => console.log(2+e));
a.get(url).then(r => console.log(3+e));
a.get(url).then(r => console.log(4+e));

// this code demonstrates asynchronous programming here any line of code can be excecuted first

// get lyrics of any song

require('axios')

.get('https://song.panditsiddharth.repl.co/lyrics?song=ram+siya+ram')

.then(r=>console.log(r.data))
// @jsCode0

// Curried function

function multiply(a) {
  return function(b) {
    return a * b;
  }
}

// Curried function can be used with partial application
const multiplyByTwo = multiply(2);
console.log(multiplyByTwo(4)); // Output: 8

// Or it can be invoked with all arguments at once
console.log(multiply(3)(5));

// @jscode0

String functions

1. length: Returns the length of a string.

2. toUpperCase(): Converts a string to uppercase.

3. toLowerCase(): Converts a string to lowercase.

4. indexOf(searchValue, startIndex): Returns the index of the first occurrence of a specified value in a string, starting from the specified index.

5. lastIndexOf(searchValue, startIndex): Returns the index of the last occurrence of a specified value in a string, starting from the specified index.

6. substring(startIndex, endIndex): Extracts a substring from a string, between the specified start and end indexes.

7. slice(startIndex, endIndex): Extracts a section of a string and returns a new string, between the specified start and end indexes.

8. replace(searchValue, replaceValue): Replaces occurrences of specified value with another value in a string.

9. split(separator): Splits a string into an array of substrings based on the specified separator.

10. trim(): Removes whitespace from both ends of a string.

11. startsWith(searchValue, startIndex): Returns true if a string starts with the specified value; otherwise, returns false.

12. endsWith(searchValue, endIndex): Returns true if a string ends with the specified value; otherwise, returns false.

13. charAt(index): Returns the character at the specified index of a string.

14. concat(str1, str2, ...): Concatenates two or more strings and returns a new string.

15. includes(searchValue, startIndex): Returns true if a string contains the specified value; otherwise, returns false.

16. match(regex): Searches a string for a match against a regular expression and returns an array of matches.

@jscode0 #share #support

// fetch song link
require("axios").get("https://song.panditsiddharth.repl.co/song?song=ae+watan")

.then((e)=>{console.log(e.data)})

// fetch song lyrics
let url = "https://song.panditsiddharth.repl.co/lyrics?song=ae+watan"

require("axios").get(url)

.then((e)=>{console.log(e.data)})

// run it and see its result and shareit

const message = String.fromCodePoint(32, 72, 97, 112, 112, 121, 32, 73, 110, 100, 101, 112, 101, 110, 100, 101, 110, 99, 101, 32, 100, 97, 121, 33);

console.log('\u{1F1EE}\u{1F1F3}' + message);

// @jscode0

// Decimal integer to binary number

function integer(intgr) {
  if (intgr < 1)
    return 0;

console.log("Now dividing decimal by 2: ")
  let temp = "";
  while (intgr > 0) {
    console.log(intgr + "/2    reminder " + intgr % 2);
    temp += intgr % 2;
    intgr = Math.floor(intgr / 2);
  }

  const reversedStr = temp.split("").reverse().join("");

  return reversedStr;
}

let dcml = 10;
let intgr = Math.floor(dcml);

console.log("Given decimal " + dcml + "\n");
console.log("\nBinary is " + integer(intgr));

// Decimal to binary conversion with steps shown

function frac(frk) {
  if (frk === 0) {
    return 0;
  }
 
  console.log("\nNow multiplying fractional part by 2");
 
  let i = 0;
  let binary = "";
 
  while (frk != 0 && i < 7) {
    console.log(frk + " x 2   integer " + Math.floor(frk * 2));
   
    frk = frk * 2;
    let k = Math.floor(frk);
    binary += k;
    frk = (frk - k).toFixed(5);
    i++;
  }
 
  return binary;
}

function integer(intgr) {
  if (intgr < 1) {
    return 0;
  }

  console.log("Now dividing integer part by 2: ");
  let temp = "";
 
  while (intgr > 0) {
    console.log(intgr + "/2    reminder " + intgr % 2);
    temp += intgr % 2;
    intgr = Math.floor(intgr / 2);
  }
 
  const reversedStr = temp.split("").reverse().join("");
  return reversedStr;
}

const readline = require('readline');
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

rl.question('Enter decimal number: ', (input) => {
  let dcml = input;
let intgr = Math.floor(dcml);
let frk = (dcml - intgr).toFixed(6);
console.log("Given decimal " + dcml + "\n");
if (frk == 0) {
  console.log("\nBinary is " + integer(intgr));
} else {
  console.log("First we divide this number into two parts: integer and fractional part.\n" + dcml + " = " + intgr + " + " + frk + "\n");

  console.log("\nAfter adding both parts:\nBinary is " + integer(intgr) + (frk != 0 ? ("." + frac(frk)) : ""));
}

rl.close();
});

// @jsCode0

// Decimal to Octal conversion with steps shown

function frac(frk) {
  if (frk === 0) {
    return 0;
  }
 
  console.log("\nNow multiplying fractional part by 8");
 
  let i = 0;
  let binary = "";
 
  while (frk != 0 && i < 7) {
    console.log(frk + " x 8   integer " + Math.floor(frk * 8));
   
    frk = frk * 8;
    let k = Math.floor(frk);
    binary += k;
    frk = (frk - k).toFixed(5);
    i++;
  }
 
  return binary;
}

function integer(intgr) {
  if (intgr < 1) {
    return 0;
  }

  console.log("Now dividing integer part by 8: ");
  let temp = "";
 
  while (intgr > 0) {
    console.log(intgr + "/8    reminder " + intgr % 8);
    temp += intgr % 8;
    intgr = Math.floor(intgr / 8);
  }
 
  const reversedStr = temp.split("").reverse().join("");
  return reversedStr;
}

const readline = require('readline');
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

rl.question('Enter decimal number: ', (input) => {
  let dcml = input;
let intgr = Math.floor(dcml);
let frk = (dcml - intgr).toFixed(6);
console.log("Given decimal " + dcml + "\n");
if (frk == 0) {
  console.log("\nOctal is " + integer(intgr));
} else {
  console.log("First we divide this number into two parts: integer and fractional part.\n" + dcml + " = " + intgr + " + " + frk + "\n");

  console.log("\nAfter adding both parts:\nOctal is " + integer(intgr) + (frk != 0 ? ("." + frac(frk)) : ""));
}

rl.close();
}); // @jscode0

// Decimal to Hexadecimal conversion with steps shown

function hex(ele){
switch(ele){
case 10: ele = "A"; break;
case 11: ele = "B"; break;
case 12: ele = "C"; break;
case 13: ele = "D"; break;
case 14: ele = "E"; break;
case 15: ele = "F"; break;
}
return ele;
}


function frac(frk) {
  if (frk === 0) {
    return 0;
  }
 
  console.log("\nNow multiplying fractional part by 16");
 
  let i = 0;
  let hex = "";
 
  while (frk != 0 && i < 7) {
    console.log(frk + " x 16   integer " + Math.floor(frk * 16));
   
    frk = frk * 16;
    let k = Math.floor(frk);
    hex += k;
    frk = (frk - k).toFixed(5);
    i++;
  }
 
  return hex;
}

function integer(intgr) {
  if (intgr < 1) {
    return 0;
  }

  console.log("Now dividing integer part by 16: ");
  let temp = "";
 
let arr1 = []
// let arr2 = []
let i = 0;
  while (intgr > 0) {
let hx = hex(intgr % 16)
    console.log(intgr + "/16    reminder " + hx);
    arr1[i++] = hx;
    intgr = Math.floor(intgr / 16);
  }

  const reversedStr = arr1.reverse().join("");
  return reversedStr;
}

const readline = require('readline');
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

rl.question('Enter decimal number: ', (input) => {
  let dcml = input;
let intgr = Math.floor(dcml);
let frk = (dcml - intgr).toFixed(6);
console.log("Given decimal " + dcml + "\n");
if (frk == 0) {
  console.log("\nHexadecimal is " + integer(intgr));
} else {
  console.log("First we divide this number into two parts: integer and fractional part.\n" + dcml + " = " + intgr + " + " + frk + "\n");

  console.log("\nAfter adding both parts:\nHexadecimal is " + integer(intgr) + (frk != 0 ? ("." + frac(frk)) : ""));
}

rl.close();
}); // @jscode0

╱╱┏╮
╱╱┃┃
▉━╯┗━╮
▉┈┈┈┈┃
▉╮┈┈┈┃
╱╰━━━╯
I hope you like it

// Octal to binary conversion with steps

function loop(oct){
let bin = ""
for(let i = 0; i < oct.length; i++){

let a = parseInt(oct[i], 8).toString(2).padStart(3, '0')
console.log( oct[i] + " = " + a);
bin += a
}
return bin
}


const readline = require('readline');
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

rl.question('Enter Octal number: ', (input) => {

let oct = "" + input
for(let i = 0; i < oct.length; i++){
if(oct[i] > '7' || oct[i] < '0')
if(oct[i] != '.')
return console.log(oct + " is not a correct octal num")
}


console.log( "Given octal number: " + oct +"\n");
if(oct.includes(".")){
let ar = oct.split(".")
console.log( "Equivalent binary numbers for each octal number: ");

console.log( "\nNow After placing each binary in sequence: \n\nOctal " + oct + " in binary is " + loop(ar[0]) + "." + loop(ar[1]));
} else {
console.log( "Equivalent binary numbers for each octal number: ");

console.log( "\nNow After placing each binary in sequence: \n\nOctal " + oct + " in binary is " + loop(oct));
}

rl.close();
}) // @JsCode0

// Sin² theta + Cos² theta

const theta = Math.PI / 4; // angle in radians
const sinTheta = Math.sin(theta);
const cosTheta = Math.cos(theta);

const result = Math.pow(sinTheta, 2) + Math.pow(cosTheta, 2);

console.log(result);

// @Jscode0

How good this pic ?

Notes 📝 :
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Info channel:
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Discussion groups:
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Learn coding:
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// Fetch song lyrics
const input = require("input");
const axios = require("axios");

const readline = require('readline');

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

rl.question("Enter song name in 2-3 words: ", async (lyrics) => {
    axios.get('https://song.panditsiddharth.repl.co/lyrics?song=' + lyrics)
      .then(response => {
        console.log(response.data);
      })
      .catch(error => {
        console.error("Error fetching lyrics:", error);
      });
 
rl.close();
});