Table of Contents
Mathematical Operators in JavaScript
In this section, we will explore all the mathematical operators and mathematical functions available in JavaScript.
To perform mathematical operation, we will need all the mathematics operators, that we know. It can be divided into given five sections:
1. JavaScript Arithmetic Operators
These operators are used to perform Arithmetic operations of numbers.
| Operator | Description | Example |
| + | Addition | 4 + 2 = 6 |
| – | Subtraction | 4 – 2 = 2 |
| * | Multiplication | 4 * 2 = 8 |
| / | Division | 4 / 2 = 2 |
| % | Modulus (Division Remainder) | 4 % 2 = 0 |
| ++ | Increment | 4++ = 5 |
| — | Decrement | 4– = 3 |
2. JavaScript Assignment Operators
These operators are used to assign values to a variable in JavaScript.
| Operator | Description | Example |
| = | a = b | a = 3 |
| += | a += b à a = a + b | a += 3 à a = a + 3 |
| -= | a -= b à a = a – b | a -= 3 à a = a – 3 |
| *= | a *= b à a = a* b | a *= 3 à a = a * 3 |
| /= | a /= b à a = a / b | a /= 3 à a = a / 3 |
| %= | a%=b àa = a % b | a %= 3 à a = a % 3 |
3. JavaScript Comparison Operators
These operators are used to perform basic comparisons between any two numbers. In given examples, we assume that value of X = 4.
| Operator | Description | Example | Result |
| == | Equal to | X == 5 X == 4 X == “4” | False True True |
| === | Equal value and equal type | X === 4 X === “4” | Ture False |
| != | Not equal | X != 5 | True |
| !== | Not equal value or not equal type | X !== 4 X !== “4” X !== 5 | False True True |
| > | Greater than | X > 5 | False |
| < | Less than | X < 5 | True |
| >= | Greater than or Equal to | X >= 5 | False |
| <= | Less than or Equal to | X <= 5 | True |
| ? | Ternary Operator Syntax: condition ? exprT : exprF ? stands for If True than : stands for If False than | var age = 25; var beverage = (age >= 21) ? “Beer” : “Juice”; console.log(beverage); | Beer |
4. JavaScript Logical Operators
Logical operators are used to determine the logic between two variables, values or conditions. In some cases, we need to add two or more comparisons for same variables and in that case, we use JavaScript logical operators.
In given examples we have assumed the value of x = 2 and y = 4.
| Operator | Description | Example | Result |
| && | and | (x < 5 && y > 1) | True |
| || | or | (x == 4 || y == 2) | False |
| ! | not | !(x == y) | True |
5. JavaScript Bitwise Operators
The bitwise operators are very similar to the JavaScript Logical operators, except they work on a smaller scale i.e. binary representation of data.
Following are the operators with their functionality:
| Operator | Functionality |
| op1 & op2 | It compares two bits and generates a result of 1 if both bits are 1, else it returns 0. |
| op1 | op2 | It compares two bits and generates a result of 1 if bits are complementary, else 0. |
| op1^ op2 | It compares two bits and generates a result of 1 if only either of the bits are 1, else 0. |
| ~op1 | It inverts all the bits of the operand (the number). |
| op1 >> op2 | It moves the bits to the right, discards the far-right bit, and assigns the leftmost bit a value of 0. |
| op1 << op2 | It moves the bits to the left, discards the far-left bit, and assigns the rightmost bit a value of 0. |
Note: Both operands associated with the bitwise operator must be integers. All the bits, of an integer, are compared individually.
| Operator | Description | Example | Bitwise Representation | Result | Decimal |
| & | AND | 5 & 1 | 0101 & 0001 | 0001 | 1 |
| | | OR | 5 | 1 | 0101 | 0001 | 0101 | 5 |
| ~ | NOT | ~ 5 | ~0101 | 1010 | 10 |
| ^ | XOR | 5 ^ 1 | 0101 ^ 0001 | 0100 | 4 |
| << | Zero fill left shift | 5 << 1 | 0101 << 1 | 1010 | 10 |
| >> | Signed right shift | 5 >> 1 | 0101 >> 1 | 0010 | 2 |
| >>> | Zero fill right shift | 5 >>> 1 | 0101 >>> 1 | 0010 | 2 |
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