React Native

Generating Random ASCII Strings

See more PRNG Examples

Demonstrates how to generate random us-ascii strings. React Native

import { Prng } from '@chilkat/react-native'

function chilkatExample() {
  // This example assumes the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  const fortuna = new Prng();

  let bDigits = false;
  let bLowercase = false;
  let bUppercase = false;

  // Generate random strings having only lowercase chars (a-z)
  // Disallow digits and uppercase and only allow lowercase
  bDigits = false;
  bUppercase = false;
  bLowercase = true;

  console.log('-- only lowercase alpha (a-z)');
  for (let i = 1; i <= 10; i++) {
    // Generate 20-character strings.
    console.log(fortuna.randomString(20, bDigits, bLowercase, bUppercase));
  }

  // Allow both lowercase and uppercase alpha chars
  bUppercase = true;
  console.log('-- lower and uppercase alpha (a-zA-Z)');
  for (let i = 1; i <= 10; i++) {
    // Generate 20-character strings.
    console.log(fortuna.randomString(20, bDigits, bLowercase, bUppercase));
  }

  // Allow digits (0-9)
  bDigits = true;
  console.log('-- digits and lower/uppercase alpha (0-9a-zA-Z)');
  for (let i = 1; i <= 10; i++) {
    // Generate 20-character strings.
    console.log(fortuna.randomString(20, bDigits, bLowercase, bUppercase));
  }

  // Allow only digits (0-9)
  bUppercase = false;
  bLowercase = false;
  console.log('-- only digits (0-9)');
  for (let i = 1; i <= 10; i++) {
    // Generate 20-character strings.
    console.log(fortuna.randomString(20, bDigits, bLowercase, bUppercase));
  }
}