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In the realm of JavaScript programming, understanding operators is paramount to writing efficient and concise code. Among these operators are unary operators, which operate on a single operand.
In this article, we’ll take a deep dive into unary operators in JavaScript, exploring their various types and how they can be used to enhance your coding prowess.
Understanding Unary Operators
Unary operators are operators that act on a single operand, making them unique in their simplicity yet versatility. JavaScript offers several unary operators, each serving a distinct purpose in manipulating values or expressions.
Let’s start by exploring some of the most commonly used unary operators:
1. Unary Plus (+) Operator
The unary plus operator (+
) attempts to convert its operand into a number, if it isn't already. If the operand is a string, it will be converted to a number. If it's already a number, no conversion is necessary.
const str = '42';
const num = +'42';
console.log(typeof str); //…