isNumeric

Determine if a JavaScript object is numeric.

Using npm

npm install isnumeric

To then include isnumeric in your node app:

var isNumeric = require("isnumeric");

Direct dependency

Download the minified version here, reference the js file and isNumeric will become a global variable.

Truthy test cases

Integers

expect(isNumeric(1)).toBeTruthy();
expect(isNumeric(-1)).toBeTruthy();
expect(isNumeric(0)).toBeTruthy();
expect(isNumeric("1")).toBeTruthy();
expect(isNumeric("-1")).toBeTruthy();
expect(isNumeric("0")).toBeTruthy();
expect(isNumeric("1.")).toBeTruthy();

Max / min numbers

expect(isNumeric(Number.MAX_VALUE)).toBeTruthy();
expect(isNumeric(Number.MIN_VALUE)).toBeTruthy();

Octals

expect(isNumeric(0144)).toBeTruthy();
expect(isNumeric("0144")).toBeTruthy();

Hexadecimals

expect(isNumeric(0xFF)).toBeTruthy();
expect(isNumeric("0xFF")).toBeTruthy();

Floating-points

expect(isNumeric(1.1)).toBeTruthy();
expect(isNumeric(0.1)).toBeTruthy();
expect(isNumeric(-1.1)).toBeTruthy();
expect(isNumeric(-0.1)).toBeTruthy();
expect(isNumeric("1.1")).toBeTruthy();
expect(isNumeric("0.1")).toBeTruthy();
expect(isNumeric("-1.1")).toBeTruthy();
expect(isNumeric("-0.1")).toBeTruthy();
expect(isNumeric(".1")).toBeTruthy();

Exponentials

expect(isNumeric(3e5)).toBeTruthy();
expect(isNumeric(123e-2)).toBeTruthy();
expect(isNumeric("3e5")).toBeTruthy();
expect(isNumeric("123e-2")).toBeTruthy();

Decimal commas

expect(isNumeric(1,1)).toBeTruthy();
expect(isNumeric("1,1")).toBeTruthy();