Javascript Data types values Type casting | Conversion of Data types | Typecasting in Javascript

Typecasting in JavaScript is the process of converting a value from one data type to another. In that, developers can convert the values of one datatype to another.

There are several ways to perform typecasting in JavaScript:

1. Implicit Typecasting:

JavaScript automatically converts a value from one data type to another as per the requirement. This is known as implicit typecasting or coercion. For example, if you try to add a string and a number, JavaScript will implicitly convert the number to a string and concatenate the two strings.

Example,

let a = 10;
let b = "5";
let c = a + b; // c will be a string "105"

2. Explicit Typecasting:

You can explicitly convert a value from one data type to another using typecasting functions or operators. JavaScript provides several functions and operators for explicit typecasting.

A. parseInt() - converts a string to an integer.

Basically, the parseInt( ) Function is used to convert any Datatype value to an Integer Value.

var a = "10";
var b = parseInt(a); // b will be an integer 10

B. parseFloat() - converts a string to a floating-point number.

parseFloat( ) Function is used to convert any Datatype value to a float value.

var a = "10.5";
var b = parseFloat(a); // b will be a floating-point number 10.5

C. String() - converts a value to a string.

String( ) Function is used to convert any Datatype value to String.

var a = 10;
var b = String(a); // b will be a string "10"

D. Number() - converts a value to a number.

The Number( ) Function is used to convert any Datatype value to a Number

let a = true;
let b = false;

let x = Number(a); // x will be returns 1
let y = Number(a); // y will be returns 0

E. Boolean() - converts a value to a boolean.

Boolean( ) Function is used to convert any Datatype value to a boolean value excepted zero (0) and null.

var a = 10;        // a will be true
var b = 0;        // b will be false
var c = "Rohan"; // c will be true

F. toString() - converts a value to a string.

Basically, the toString( ) Function also works like the String( ) Function, Which converts any Datatype value to String Value.

var a = ture;
var b = a.toString(); // b will be a string "true"

So these are the types of Explicit Typecasting...

I hope this post will help you to learn Javascript More...!

Thank You..!!

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