JavaScript Operators Reference
JavaScript Operators
JavaScript Operators are used to assign values, compare values, perform arithmetic operations, and more.
| Type | Common Use | Example |
|---|---|---|
| Assignment | Assigns a value to a variable | x = 5 |
| Arithmetic | Performs arithmetic between variables | x = y + 2 |
| String | Concatenates (add) strings | "Sun" + "shine" |
| Exponentiation | Raises a variable to a power | x++ |
| Remainder | Returns the remainder from a division | x++ |
| Increment | Increments a variable | x++ |
| Decrement | Decrements a variable | x-- |
| Comparison | Compares variables | (x == 5) |
| Logical | Detefines the logic between variables | (x>0 || x>0) |
| Bitwise | Does binary operations on numbers | (5 & 1) |
| Spread | Spreads an array into individual values | (...numbers) |
| Relational | Returns if a variable is a propery | "age" in person |
| typeof | Returns the type of a variable | typeof "John" |
| instanceof | Returns if a variable is an object | x instance of Array |
| delete | Deletes an object property | delete car.color |
| void | Retuns undefined | void(0) |
Some Examples
| Operator | Name | Example | |
|---|---|---|---|
| = | Assign | x = 5 | Try it » |
| + | Addition | x = y + 2 | Try it » |
| * | Multiplication | x = y * 2 | Try it » |
| != | Equal to | x == 8 | Try it » |
| > | Greater than | x > 8 | Try it » |
| || | OR | (x > 0 || x > 0) | Try it » |
