JavaScript Operators
What are the operators
Operators are allow us to perform multiple multiple operation on the data or variables.
Such as mathematical calculations, comparisons, and logical evaluations.
They are total 4 types of Operators:
1.Arithmetic operators (+, -, "*", /, %)
2.Comparison operators (==, ===, !=, >, <)
3.Logical operators (&&, ||, !)
4.Assignment operators (=, +=, -=)
1.Arithmetic Operators
Arithmetic Operators allow us to perform common mathematical operations.
These called Operators (+, -, "*", /, %).Most of them we have seen in our Mathbook.
1."+"(Addition)
The addition operator (+) adds numbers
let a = 10 let b = 20 let c = a + b
console.log(c) // 30
2."-"(Subtraction)
The subtraction operator (-) subtracts numbers.
it's like minus the value
let x = 5;
let y = 2;
let z = x - y;
console.log(z) // 3
3."*"(Multiplying)
The multiplication operator (*) multiplies numbers.
let x = 5;
let y = 2;
let z = x * y;
console.log(z) // 10
4."/"(Division)
The division operator (/) divides numbers.
let x = 5;
let y = 2;
let z = x / y;
console.log(z) // 2
5."%"(Remainder)
The modulus operator (%) returns the remainder of operation.
let x = 5;
let y = 2;
let z = x % y;
console.log(z) // 1
2.Comparison operators
As name it compare the value between 2 variables. It 's always returns True or False value
1."=="(equal to)
it compare the values and If value is same then return True Else False.It does not check the type of the value like it's string or numbers.
console.log(5 == "5"); // true
2."==="(Strict equal to)
It's same as equal to(==) operator but difference is Strict equal to also check the data type
console.log(5 "5"); // true ()
console.log(5 === "5"); // false (strict equal to) (===)
3."!="(Not equal to)
Returns true if values or types differ.
console.log(5 != "5"); // false
console.log(5 !== "5"); // true (strict)
4.">"(Greater than)
Returns True if value is Greater than other value
console.log(9 > 8) // True
console.log(9 >= 9) (Greater than or equal to) // True
5."<"(Less Than)
Returns True if value is Less than other value
console.log(5 < 10); // true
console.log(10 < 5); // false
3.Logical operators (&&, ||, !)
1."&&"(And Operator)
Returns true only if both sides are true.
let age = 25;
let hasLicense = true;
// Logical AND (&&) - Both must be true
if (age >= 18 && hasLicense) { console.log("You can drive!"); }
2."||"(Or operator)
Returns true only if anyone side is true.
// Logical OR (||) - Only one needs to be true
let isWeekend = true; let isHoliday = false;
if (isWeekend || isHoliday) { console.log("You can sleep in."); }
3."!"(Logical NOT)
It invert the result of condition.
let isWeekend = true;
let isHoliday = false;
console.log(!isWeekend); // false
console.log(!isHoliday); // true
5.Assignment operators (=, +=, -=)
Assignment operators are used to assign the value to the variable.
1."="(Basic Assignment operator)
It simply takes the value on the right and puts it into the variable on the left.
let x = 10;
2."+="(Addition Assignment operator)
It adds the value on the right to the variable on the left and then updates that variable with the new result.
let score = 10;
score += 5; // Same as: score = 10 + 5
console.log(score); // 15
3."-="(Subtraction Assignment operator)
It's same as "+=" but differ is it subtract the value
let score = 10;
score -= 5; // Same as: score = 10 - 5
console.log(score); // 5
Thank You
