Type Coercion and Falsy values

Javascript automatically or implicitly converts values from one data type to another.

This means conversion from

• Number to String

• String to Number

• Boolean to Number

• etc. note - We can perform all the activities Using mathematical operators

1. Number + String = String

let str = '2'+3;

 console.log(typeof str, str);

Output -  string 23

The above example will converted numbers into string

1. Number - String = Number

let num = "23"-10;

num = Number("23")-10 // Number("23") is equal to 23

console.log(num, typeof num);

Output - 13 number

1. Number / String = Number

let num2 = "20"/ 2;

console.log(num2, typeof num2);

Output - 10 number

1. Number * String = Number

let num2 = "20" * 2;

console.log(num2, typeof num2);

Output - 20 number

1. Number % String = Number

let num2 = "20" % 3;

console.log(num2, typeof num2);

Output - 2 number

1. With the expression

 console.log(2 + 6 + "15" -3 );

// 8+'15'-3

// '815'-3

// 812

 output - 812

Falsy Values

Basically, falsy values are Booleans which return a false value or 0 as an output

We have 0, null, undefined, NaN

console.log(Boolean(""));

console.log(Boolean(0));

console.log(Boolean(null));

console.log(Boolean(undefined));

console.log(Boolean(NaN));

output - 
        false
        false
        false
        false
        false

Truthy Values

The rest except falsy values are truty values

console.log(Boolean("bharat"));

console.log(Boolean(15));

console.log(Boolean([]));

console.log(Boolean({}));

console.log(Boolean(" "));

Output - 
true
true
true
true
true