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Showing posts from October, 2023

DOM AND BOM IN JAVASCRIPT

 HTML <!DOCTYPE html> <html> <head>   <meta charset="utf-8">   <meta name="viewport" content="width=device-width">   <title>replit</title>   <link href="style.css" rel="stylesheet" type="text/css" /> </head> <body>   Hello world   <br>   I am learning javascript   <script src="script.js"></script>   <!--   This script places a badge on your repl's full-browser view back to your repl's cover   page. Try various colors for the theme: dark, light, red, orange, yellow, lime, green,   teal, blue, blurple, magenta, pink!   -->   <script src="https://replit.com/public/js/replit-badge-v2.js" theme="dark" position="bottom-right"></script> </body> </html> css no css Javascript console.log(window) console.log(document) console.log(document.body) document.body.style.background = "...
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Array Practice Set In Javascript

let prompt = require("prompt-sync")(); let alert = require("prompt-sync")({ sigint: true }); //Q1 let num = [71, 52, 63, 44, 75, 84, 25, 28, 35] let a;  //One Number addition In Array let a = prompt("Enter a number") a = Number.parseInt(a) num.push(a) console.log(num) //Q2  let b = [71, 52, 63, 44, 75, 84, 25, 28, 35] do {   a = prompt("Enter a number")   a = Number.parseInt(a)   num.push(a)    } while (a != 0) console.log(num) //Q3  let num = [70, 52, 63, 40, 75, 84, 20, 28, 30] let mew = num.filter((a) => {   return a % 10 == 0 }) console.log(mew)  //Q4 let num = [70, 52, 63, 40, 75, 84, 20, 28, 30] let mew = num.map((a) => {   return a * a }) console.log(mew) 
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Map , Filter , Reduce In Javascript

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let prompt = require("prompt-sync")(); let alert = require("prompt-sync")({ sigint: true }); //Map Function let num = [71, 52, 63, 44, 75, 84] let b = num.map((value)=> {   console.log(value)   return value + 10 }) console.log(b) // Filter Function let num2 = [71, 52, 63, 44, 75, 84] let c = num2.filter((value)=> {   return value > 50 }) console.log(c) //Reduce Function let num3 = [71, 52, 63, 44, 75, 84] let d = num3.reduce((value1, value2)=> {   return value1 + value2 }) console.log(d)  
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Loops With Array In Javascript

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 let prompt = require("prompt-sync")(); let alert = require("prompt-sync")({ sigint: true }); let num = [71, 52, 63, 44, 75, 84] for(let i= 0; i<num.length; i++){   console.log(num[i]) }   // forEach loop num.forEach((element) => {   console.log(element * 2*element) }) //Array.form let name = "Debadatta" let arr = Array.from(name) console.log(arr) // for...of for(let i of num){   console.log(i) } //for...in for(let i in num){   console.log(i) }
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Array Function 2 In Javascript

 let prompt = require("prompt-sync")(); let alert = require("prompt-sync")({ sigint: true }); let num = [71, 52, 63, 44, 75, 84] let num1 = [71, 52, 63, 44, 75, 84] let newa = num.concat(num1) console.log(newa) num.sort() console.log(num) let compare = (a, b) => {   return b - a } num.sort(compare) console.log(num) //Spile and slice let n = [71, 52, 63, 44, 75, 84] n.splice(2, 3, 1021, 1022, 1023) console.log(n) let snum = n.slice(1,3) console.log(snum)
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Array Methods In Javascript

 let prompt = require("prompt-sync")(); let alert = require("prompt-sync")({ sigint: true }); let num = [71, 52, 63, 44, 75] let b = num.toString() console.log(b) let c = num.join("_") console.log(c) num.pop() console.log(num) //Push , Shift , unshift is used to add new element in array // let r = num.push(56) // console.log(num, r) //Shift is used to remove first element of array  // let r = num.shift() // console.log(num, r) //Unshift is used to add new element in array // let r = num.unshift(78) // console.log(num, r)
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Arrays In Javascript

 let prompt = require("prompt-sync")(); let alert = require("prompt-sync")({ sigint: true }); let marks_sem = [71,52,63,44,75] console.log(marks_sem[0]) console.log(marks_sem[1]) console.log(marks_sem[2]) console.log(marks_sem[3]) console.log(marks_sem[4]) console.log("The lenghth of marks_sem is", marks_sem.length) type of data = object
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Practice Set String(COH)

 let prompt = require("prompt-sync")(); let alert = require("prompt-sync")({ sigint: true }); //Q1 let name = "Deba\"datta" console.log(name.length) //Q3 let friend = "Mahesh" console.log(friend.toLowerCase()) //Q4 let str = "Please give Rs 1000" let amount = str.slice(15) console.log(amount) //Q6 let buddy = "Jyoti" buddy[3] =  "P" //String is immutable
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String Methods In Javascript

 let prompt = require("prompt-sync")(); let alert = require("prompt-sync")({ sigint: true }); let name = "Debadatta" console.log(name.length) console.log(name.toUpperCase()) console.log(name.toLowerCase()) console.log(name.slice(2,4)) console.log(name.slice(2)) console.log(name.replace("Deba" , "Prabhu")) console.log(name.concat("Is A Student of Computer Science")) let you = "    Deba      " console.log(you) console.log(you.trim()) let me = "Mahesh" console.log(me[2])
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String, escape sequence chars and template literals in Javascript

 let prompt = require("prompt-sync")(); let alert = require("prompt-sync")({ sigint: true }); let name = "Debadatta" console.log(name.length) console.log(name[2]) let friend  = "Jyoti" console.log(friend) //Template Literals let boy1 = "Mahesh" let boy2 = "Samir" let sentence = `${boy1} is a friend of ${boy2}` console.log(sentence) //Escape sequence characters let fruit = 'Man\'go' console.log(fruit)
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Functions In Javascript

 let prompt = require("prompt-sync")(); let alert = require("prompt-sync")({ sigint: true }); function oneplusavg(x,y){   console.log("done")   return 1 + (x+y)/2 } let a = 1; let b = 2; let c = 3; console.log("One Plus Avg Of a and b is" , oneplusavg(a , b)) console.log("One Plus Avg Of a and c is" ,oneplusavg(a , c)) console.log("One Plus Avg Of c and b is" , oneplusavg(b , c))
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While Loop In Javascript

 let prompt = require("prompt-sync")(); let alert = require("prompt-sync")({ sigint: true }); // While Loop(Basic) let n = prompt("Enter The Value Of n") n = Number.parseInt(n) let i = 0; while (i<n){   console.log(i)   i++; } //Do While Loop let n = prompt("Enter The Value Of n") n = Number.parseInt(n) let i = 0; do{   console.log(i)   i++; }    while (i<n)
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Loops In Javascript

 Adding N Numbers let prompt  = require("prompt-sync")(); let alert  = require("prompt-sync")({sigint:true}); //For Loop let sum = 0 let n = prompt("Enter the value of n") n = Number.parseInt(n) for (let i = 0; i<n; i++){   sum += (i+1) }   console.log("Sum Of First" + n + "natural number is" + sum) //For Of Loop let obj = {   Deba: 92,   Jyoti: 78,   Kanha: 65,   Samir: 71, } for (let a in obj){   console.log("Marks Of" + a + "is" + obj[a]) } New //For In Loop let obj = {   Deba: 92,   Jyoti: 78,   Kanha: 65,   Samir: 71, } for (let a in obj){   console.log("Marks Of" + a + "is" + obj[a]) }  //For Of Loop for (let b of "Deba"){   console.log(b) }
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Ternary Operator In JavaScript

 //Ternary Operation let age = 19 let a = age > 18 ? "You Can Drive" : "You Can't Drive" console.log(a)
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JavaScript Practices Set - 2(COH)

 let prompt  = require("prompt-sync")(); let alert  = require("prompt-sync")({sigint:true}); // chapter 2 Practice set //Q3 let age = prompt("What is your age?") switch (age) {      case '12':     console .log("your age is 12")     break      case '13':     console .log("your age is 13")     break      case '14':     console .log("your age is 14")     break      case '15':     console .log("your age is 15")     break   default:   console .log("your age is not special") }*/ //Q4 let num = prompt ("what is your number?") num = Number.parseInt(num) if (num % 2 == 0 && num % 3 ==0 ){   console.log("Your number is divisible by 2 & 3") }          else{    console.log("Your number is not divisible by 2 & 3") } //Q5 //Ternary Operation let age = 19 let a = age > 18 ? "You Ca...
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Full If Else Statement In javascript

let prompt  = require("prompt-sync")(); let a = prompt("whats your age?") a = Number.parseInt(a) let alert  = require("prompt-sync")({sigint:true}); if (a<0){   alert("This is a valid age"); } else if(a<9){   alert("You Are A KID"); }   else if(a<18 && a>=9){   alert("You Are A Teenage Now"); }     else {   alert("You Can Drive"); } 
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If Else Statement In JavaScript

 let prompt  = require("prompt-sync")(); let a = prompt("whats your age?") a = Number.parseInt(a) let alert  = require("prompt-sync")({sigint:true}); if (a>0){   alert("This is a valid age"); } else {   alert("This Is Not valid age") }
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If Statement In Javascript

 let prompt  = require("prompt-sync")(); let a = prompt("whats your age?") a = Number.parseInt(a) let alert  = require("prompt-sync")({sigint:true}); if (a>0){   alert("This is a valid age") } Line 1 and 4 are defined following functions in Repl
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