JavaScript?? ???? ?? ??? ?? ??? ???? ? ???? ?? ?? ?? ??????. ?? ?? ???? ???? ?? ??? ??? ? ????. ?? ????? ???? ??? ??? ? ??? ??? ?????.

1?? ?? ??? (=)

?? ???? ??? ?? ???? ? ?????.
? ?:

let x = 10 // Assigns the value 10 to variable x
let y = 5 // Assigns the value 5 to variable y

2?? ?? ???

?? ???? ??? ?? ???? ?? ??? ?????.

1. (??)
2. -(??)
3. *(???)
4. /(??)
5. %(?? - ???? ???)
6. ** (???(ES2016))
7. (??)
8. -- (??)

? ?:

console.log("x + y = " + (x + y)) // Output: x + y = 15
console.log("x - y = " + (x - y)) // Output: x - y = 5
console.log("x / y = " + (x / y)) // Output: x / y = 2
console.log("x * y = " + (x * y)) // Output: x * y = 50
console.log("x % y = " + (x % y)) // Output: x % y = 0
console.log("(x**y) = " + (x**y)) // Output: (x**y) = 100000
console.log("(++x) = " + (++x)) // Output: (++x) = 11
console.log("(x++) = " + (x++)) // Output: (x++) = 11
console.log("(--y) = " + (--y)) // Output: (--y) = 4
console.log("(y--) = " + (y--)) // Output: (y--) = 4

3?? ?? ???

?? ???? ? ?? ???? ??(true ?? false)? ?????. ?? ?? ? ????? ?? ?????.

1. == (??)
2. === (??? ???)
3. != (?? ??)
4. !== (??? ?? ??)
5. < (??)
6. > (?? ?)
7. <= (??? ??)
8. >= (?? ??? ??)

? ?:

console.log("(x == y) = " + (x == y)) // Output: (x == y) = false
console.log("(x != y) = " + (x != y)) // Output: (x != y) = true
// Compares datatypes also
console.log("(x === y) = " + (x === y)) // Output: (x === y) = false
// Compares datatypes also
console.log("(x !== y) = " + (x !== y)) // Output: (x !== y) = true
console.log("(x > y) = " + (x > y)) // Output: (x > y) = true
console.log("(x >= y) = " + (x >= y)) // Output: (x >= y) = true
console.log("(y < x) = " + (y < x)) // Output: (y < x) = true
console.log("(y <= x) = " + (y <= x)) // Output: (y <= x) = true

4?? ?? ???

?? ???? ?? ??? ???? ?? ?(true ?? false)? ???? ? ?????.

1. &&(?? AND)
2. || (??? OR)
3. ! (??? NOT)

? ?:

let isValidNumber = (x > 8 && 8 > y) // If both condition are correct returns true otherwise false
console.log("(x > 8 && 8 > y) = " + isValidNumber) // Output: (x > 8 && 8 > y) = true

let isValidCheck = (x > 20 || 8 > y) // If one of condition is correct returns true otherwise false
console.log("(x > 20 || 8 > y) = " + isValidCheck) // Output: (x > 20 || 8 > y) = true

let isValid = false
console.log("(!isValid) = " + !isValid) // Output: (!isValid) = true

5?? ??? ???

???? ????? ??(? ??? ??)? ?? ???? ?? ??? ? ????. ??? ?? ???? ??? ?????.

? ?:

// Concatenation
console.log("Richa " + "webDev") // Output: Richa webDev 
// Addition
console.log(10 + 5) // Output: 15

6?? ?? ???(? :)

?? ???? ??? ??? ???? ??? ?????. ??? ??? ??? ?? ????, ???? ?? ?? ?????.
? ??:

condition ? valueIfTrue : valueIfFalse;

? ?:

const isEven = 10 % 2 === 0 ? "Number is even" : "Number is old"
console.log("isEven = " + isEven) // Output: isEven = Number is even

? ????

num , --num ? num-- ??? ??? ?? ??? ?? ??? 21? ??? ?????. ??? ??? ?????.

let num = 20
console.log("num = " + num) // Output: (++num) = 21
console.log("(++num) = " + (++num)) // Output: (++num) = 21
console.log("(num++) = " + (num++)) // Output: (num++) = 21
console.log("(--num) = " + (--num)) // Output: (--num) = 21
console.log("(num--) = " + (num--)) // Output: (num--) = 21

??:

num = 20
(++num) = 21
(num++) = 21
(--num) = 21
(num--) = 21

??

JavaScript ???? ????? ???? ??? ???? ? ??? ?? ?? ?? ?????. ?? ????? ??? ???? ??? ??? ???? ???? ??? ??? ? ????. ?? ???? ??? ?? ??? ??? ? ? ??? ? ????!
??? ????? ?

? ??? JavaScript ??? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!