15-other_operator.md

Loose equality operator (==)

The equality operator (==) checks whether its two operands are equal, returning a Boolean result. Unlike the strict equality operator, it attempts to convert and compare operands that are of different types.

console.log(1 == 1); //true

console.log("hello" == "hello"); //true

console.log("1" == 1); //true

console.log(0 == false); //true

Strict Equality Operator (===)

The strict equality operator (===) checks whether its two operands are equal, returning a Boolean result. Unlike the equality operator, the strict equality operator always considers operands of different types to be different.

console.log(1 === 1); //true

console.log("hello" === "hello"); //true

console.log("1" === 1); //false

console.log(0 === false); //false

Ternary Operator

: ? Operator : It is like the short form of the if-else condition. - Syntax:

Y = ? A : B

• where A and B are values and if condition is true then Y = A otherwise Y = B.
• Example:

Y = (6>5) ? 6 : 5
therefore Y = 6

typeof Operator

typeof Returns the type of a variable instanceof Returns true if an object is an instance of an object type

• Without Ternary operator

let val = 10;
if (val < 20) {
console.log("Yes");
} else {
console.log("No");
}

• With Ternary Operator

val < 10 ? console.log("Yes") : console.log("No");

• Typeof operator example

let m = 10;
console.log(typeof m); //number
m = "learnjavascript";
console.log(typeof m); //string