javascript Tutorial
JavaScript Numbers
Learn more about one of the world’s most popular programming languages.
Numerical information in JavaScript is represented by a data type called number. Whether the numeric value of the JavaScript numbers is a whole number, fraction, or a number with decimal point precision, numbers in JavaScript are all collectively represented as a number data type.
In JavaScript, regular numbers are always stored as double-precision floating-point numbers. Unlike other programming languages, JavaScript doesn’t define different types of numbers.
const weight = 78.5;
const grades = 98;
const remainder = 80 % 4;
console.log(weight); // prints 78.5
console.log(grades); // prints 98
console.log(remainder); // 0
console.log(typeof weight); // prints number
console.log(typeof grades); // prints number
console.log(typeof remainder); // prints numberInfinity, -Infinity and NaN
Numbers in JavaScript can also be +Infinity, -Infinity or NaN (Not a Number) value based on the numerical calculations.
const value = 65 / 0;
const data = -65 / 0;
const result = ‘hello’ / 10;
console.log(value); // prints Infinity
console.log(data); // prints -Infinity
console.log(result); // prints NaNLearn JavaScript Today
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