TypeScript - check if string contains any numbers

In this article, we would like to show you how to check if the string contains any numbers in TypeScript.

Quick solution:

xxxxxxxxxx

const text: string = 'Example 123';

​

if (text.match(/\d+/g)) {

  console.log('The string contains a number.');

}

In this example, we use match() method to check if the text string contains any numbers.

xxxxxxxxxx

const regex: RegExp = /\d+/g;

const text: string = 'Example number: 23.';

​

if (text.match(regex)) {

  console.log('The string contains a number.');

}

Output:

xxxxxxxxxx

The string contains a number.

Note:

The match() method used with /g flag returns all results matching the complete regular expression (regex). If nothing matches returns null.

1. JavaScript - check if string contains any numbers