The Unary plus(+) operation is a single operand operator (which means it worked with only a single operand preceding or succeeding to it), which is used to convert its operand to a number, if it isn’t already a number.
Syntax:
+Operand
Below examples illustrate the Unary plus(+) Operator in JavaScript:
Example 1:This example shows the use of the JavaScript Unary plus(+) Operator. It converts a string into a number.
Javascript
const x = "10"; let y; y = +x; console.log(y); console.log(typeof y); |
Output:
10 number
Example 2: The following example demonstrates a unary method with numbers.
Javascript
const a = 100; const b = -100; const c = 20; console.log(+a); console.log(+b); console.log(+c); |
Output:
100 -100 20
Example 3: The following example demonstrates a unary method with non-numbers.
Javascript
const a = true; const b = false; const c = null; const d = function (x) { return x }; console.log(+a); console.log(+b); console.log(+c); console.log(+d); |
Output:
1 0 0 NaN
We have a complete list of Javascript Operators, to check those please go through the Javascript Operators Complete Reference article.
Supported Browsers:
- Chrome
- Edge
- Firefox
- Safari
- IE
- Opera
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