JS - DATA TYPE CONVERSION

DATA TYPE CONVERSIONS

NUMBER  to STRING

Var a = 10;

Var b = String(a)

STRING to NUMBER

Var a = ‘10’;

Var b = Number(a) ; parseInt (a) ; parseFloat(a) ;   +(a)

For Non-Numeric string the output will be NaN

STRING to ARRAY

Var a =’ok’

Var b = a.split(‘’) ; a.split(‘  ‘) space ;  a.split(‘,’) comma

ARRAY to STRING

Var a = [1,2,3,4,5]

Var b = a.join(‘’) ; a.join(‘  ‘) space ;  a.join(‘,’) comma

ARRAY to OBJECT

Var arr = [1,2,3,4,5]

Var b = Object.assign({},arr)

OBJECT to ARRAY

Var  obj ={“name” : “susi” , “city” :”Trichy”, }

Var arr = Object.keys(obj)  ; Object.values(obj) ; Object.entries(obj)

// Number to String

var num = 25;

var str = String(num);

console.log(str)

// String to Number

var str = '2.5';

var num = Number(str);

var flo = parseFloat(str);

var int = parseInt(str);

var plus = +str;

console.log(num)

console.log(flo)

console.log(int)

console.log(plus)

//String to Array

var str ="javascript"

var arr = str.split('')

console.log(arr)

//Array to String

var arr = [1,2,3,"js"]

var str = arr.join('')

console.log(str)

//Array to Object

var arr = [1,2,3,"js"]

var obj = Object.assign({},arr)

console.log(obj)

//Object to Array

var obj = {"name":"hari","city":"trichy"}

var arr1 = Object.keys(obj)

var arr2 = Object.values(obj)

var arr3 = Object.entries(obj)

console.log(arr1)

console.log(arr2)

console.log(arr3)