Operators and Expressions in JavaScript

 //A fragment of code that produces a value is called an expression.

//Every value written literally is an expression. For ex: 77 or "Harry"

77;     //This is also a javaScript program

true;   //This is also a javaScript program

console.log("Arithmetic Operators in JS");

let a = 46;

let b = 5;

console.log("a + b =", a + b);

console.log("a - b =", a - b);

console.log("a * b =", a * b);

console.log("a / b =", a / b);

console.log("a ** b =", a ** b);

console.log("a % b =", a % b);

console.log("a++ =", a++, a);

console.log("a-- =", a--, a);

console.log("a =", a);

console.log("++a =", ++a);

console.log("--a =", --a);

console.log("Assignment Operators in JS");

let a2 = 8

console.log(a2);

a2 += 1;    //same as a2 = a2 + 1;

console.log("a is now =", a2);

a2 -= 5;    //same as a2 = a2 - 5;

console.log("a is now =", a2);

a2 *= 5;    //same as a2 = a2 * 5;

console.log("a is now =", a2);

a2 /= 5;    //same as a2 = a2 / 5;

console.log("a is now =", a2);

a2 **= 5;

console.log("a is now =", a2);

console.log("Comparison Operators in JS");

let comp1 = 6;

let comp2 = 6;

let comp3 = "6";

let comp4 = 4;

console.log("comp1 == comp2 is", comp1 == comp2);   //"==" checks only values(Not data types)

console.log("comp1 == comp3 is", comp1 == comp3);   //"==" checks only values(Not data types)

console.log("comp1 != comp2 is", comp1 != comp2);

console.log("comp1 === comp2 is", comp1 === comp2);

console.log("comp1 === comp3 is", comp1 === comp3); //"===" checks values as well as data types

console.log("comp1 > comp4 is", comp1 > comp4);

console.log("comp1 >= comp2 is", comp1 >= comp2);

console.log("Logical Operators");

let x = 5;

let y = 6;

console.log(x < y && x == 5);   //For &&, Must be true for both conditions then only result will be true,

console.log(x < y && x == y);   //otherwise result will be false

console.log(x > y || x == 5);   //For ||, only one condition must be true then only result will be true,

console.log(x > y || x == y);   //if both conditions false, then only result will be false, otherwise result will be true

console.log(!false);

console.log(!true);

//This is Single Line Comment

/*This is

multiline

comment*/

OUTPUT :

Arithmetic Operators in JS a + b = 51 a - b = 41 a * b = 230 a / b = 9.2 a ** b = 205962976 a % b = 1 a++ = 46 47 a-- = 47 46 a = 46 ++a = 47 --a = 46 Assignment Operators in JS 8 a is now = 9 a is now = 4 a is now = 20 a is now = 4 a is now = 1024 Comparison Operators in JS comp1 == comp2 is true comp1 == comp3 is true comp1 != comp2 is false comp1 === comp2 is true comp1 === comp3 is false comp1 > comp4 is true comp1 >= comp2 is true Logical Operators true false true false true false