number#

Built-in regex plugin for validating single-digit numbers.

Usage Scenarios#

• Form Validation: Validate single-digit number input fields.
• Data Sanitization: Ensure input is a single digit.
• Simple Calculations: Verify input for basic arithmetic operations.

Examples#

import { regex } from 'funtool';

// Basic validation
const isValid = regex.checker('5').use('number').isValid();

// With error handling
const result = regex.checker('12').use('number');
if (!result.isValid()) {
  console.log('Input must be a single digit.');
}

Pattern#

/^[0-9]$/

Validation Rules#

• Input must be a single digit from 0 to 9.

Error Message#

Returns false for invalid inputs without a specific message.