What are different operators in JavaScript?
JavaScript Arithmetic Operators
| Operator | Name | Example |
|---|---|---|
| + | Addition | x + y |
| – | Subtraction | x – y |
| * | Multiplication | x * y |
| / | Division | x / y |
How many types of operations are there in JavaScript?
JavaScript Operators are as rich as what you’d expect from any modern language. There are four categories: arithmetic, comparison, assignment, and logical.
What does !== Mean in JavaScript?
The strict inequality operator ( !== ) checks whether its two operands are not equal, returning a Boolean result. Unlike the inequality operator, the strict inequality operator always considers operands of different types to be different.
How many operators are there in JavaScript?
Logical operators There are also some operations that can be applied to Boolean values themselves. JavaScript supports three logical operators: and, or, and not.
What is the OR operator in JavaScript?
The logical OR ( || ) operator (logical disjunction) for a set of operands is true if and only if one or more of its operands is true. It is typically used with boolean (logical) values. When it is, it returns a Boolean value.
What is the spread operator in JavaScript?
The spread operator is a new addition to the set of operators in JavaScript ES6. It takes in an iterable (e.g an array) and expands it into individual elements. The spread operator is commonly used to make shallow copies of JS objects. Using this operator makes the code concise and enhances its readability.
What are three dots in JavaScript?
Rest operator. When used within the signature of a function, where the function’s arguments should be, either replacing the arguments completely or alongside the function’s arguments, the three dots are also called the rest operator.