Assignment

 let num = [7, 9, 0, -2];

let n = 3;
// Q1
console.log(num.slice(0, n));
// Q2
console.log(num.slice(-n));

// Q3
let str = prompt("Enter string:");
if (str.length == 0) {
  console.log("string is empty");
} else {
  console.log("string is not empty");
}

// Q4
let str2 = prompt("enter StRiNg:");
let idx = prompt("enter index:");

if (str2[idx] == str2[idx].toLowerCase()) {
  console.log("character is lowercase");
} else {
  console.log("character is not lower case");
}

// Q5
let str3 = prompt("enter string with spaces:");
console.log(`String with spaces:${str3}`);
console.log(`string without spaces:${str3.trim()}`);

// Q6
let arr = ["abhi", 122, 4.5, "p"];
let element = 143;
if (arr.indexOf(element) == -1) {
  console.log("Element doesn't exist");
} else {
  console.log("element exists");
}


Comments

Post a Comment

Popular posts from this blog

Callback Hell

Image
      < h1 > call Hell Demo </ h1 > let h1 = document . querySelector ( "h1" ); function changeColor ( color , delay , NextchangeColor ) {   setTimeout (() => {     h1 . style . color = color ;     if ( NextchangeColor ) NextchangeColor ();   }, delay ); } changeColor ( "red" , 1000 ,() => {     changeColor ( "blue" , 1000 ,() => {         changeColor ( "orange" , 1000 ,() => {             changeColor ( "green" , 1000 ,() => {                 changeColor ( "yellow" , 1000 );             })         })     }) });
Read more

TODO list with DOM

Image
 HTML <! DOCTYPE html > < html lang = "en" > < head >     < meta charset = "UTF-8" >     < meta name = "viewport" content = "width=device-width, initial-scale=1.0" >     < title > TODO List with DOM </ title > </ head > < body >     < h1 > TODO List </ h1 >     < input placeholder = "Enter Task" >     < button > Add Task </ button >     < ul >         < li > Eat < button class = "delbtn" > delete </ button ></ li >         < li > Sleep < button class = "delbtn" > delete </ button ></ li >     </ ul >     < script src = "TODOwithDOM.js" ></ script > </ body > </ html > JS let btn = document . querySelector ( "button" ); let inp = document . querySelector ( "input" ); let ul = do...
Read more

Refactoring callback hell code

Image
  let h1 = document . querySelector ( "h1" ); function changeColor ( color , delay ) {   return new Promise (( resolve , reject ) => {     setTimeout (() => {       h1 . style . color = color ;       resolve ( "color changed" );     }, delay );   }); } changeColor ( "red" , 1000 )   . then (() => {     console . log ( "Color changed to Red" );     return changeColor ( "orange" , 1000 );   })   . then (() => {     console . log ( "color changed to orange" );     return changeColor ( "green" , 1000 );   })   . then (() => {     console . log ( "color changed to green" );     return changeColor ( "blue" , 1000 );   })   . then (() => {     console . log ( "color changed to blue" );   });
Read more