K-Vishwak

const mainArr = ['apple', 'banana', 'mango', 'grapes', 'orange'];

// mainArr.slice(start, end) - start & end are indexes. JS index starts with 0.
const shallowArr = mainArr.slice(1, 4);

// includes 1 & excludes 4.
shallowArr
> ['banana', 'mango', 'grapes']

const onlyStart = mainArr.slice(3);

K-Vishwak

const mainArr = ['apple', 'banana', 'mango', 'grapes', 'orange'];


const negativeIndex = mainArr.slice(-4);

// 1:
negativeIndex;
> ...........

K-Vishwak

const ObjectsArray = [
    {id: '1', name:'vk'},
    {id: '2', name:'js'}
];

const sliced = ObjectsArray.slice(1);

sliced
> 0: {id: '2', name: 'js'}

K-Vishwak

const str = 'Welcome to vkglobal just code';

// copies entire string.
str.slice();
> 'Welcome to vkglobal just code'

// between indexes. Count spaces too.
str.slice(11,19);
> 'vkglobal'

K-Vishwak

const str = 'Welcome to vkglobal just code';

const negativeToPositiveRange = str.slice(-11, 10);

// 1: 
negativeToPositiveRange;
> ......................

K-Vishwak

const num = 10.5;

console.log(Math.round(num)); // 11
console.log(Math.ceil(num)); // 11
console.log(Math.floor(num)); // 10

const num1 = 10.4;

console.log(Math.round(num1)); // 10
console.log(Math.ceil(num1)); // 11

K-Vishwak

const num = 10.547;

console.log(Math.trunc(num));
> 10

K-Vishwak

const num = 10.547;
const num1 = -10.547;

console.log(Math.abs(num)); // 10.547
console.log(Math.abs(num1)); // 10.547

K-Vishwak

const num = 9;

console.log(Math.pow(num, 2)); // 81
console.log(Math.sqrt(num)); // 3

K-Vishwak

console.log(Math.max(3,4,5,1,2)); // 5

console.log(Math.min(3,4,5,1,2)); // 1