Numbers – JavaScript

Summary

In JavaScript, you can write whole numbers and decimal numbers.

// Whole numbers
const positiveNumber = 1234;
const negativeNumber = -1234;

// Decimal numbers
const floatingPointNumber = 1.234;

const floatingPointExponent = 1.23e+4;
const floatingPointNegativeExponent = 1.23e-4;

Details

For the exponent notation, a capital E can be used as well in addition to the lowercase e, like this:

const floatingPointExponent = 1.23E+4;
const floatingPointNegativeExponent = 1.23E-4;

Demo

Exercises

Try the following statements in the console:

1234
1.234
1.23e+4

References

Numerical literals on MDN

Arithmetic operators on MDN

Operator precedence on MDN

Operator precedence table on MDN

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