Text-Only Responses

pattern: [A-Za-z]+

This ensures the response contains only letters. You can modify the expression to allow spaces or accents if needed.

Specific Number Format

pattern: \d{4}

pattern: [1-9][0-9]{3}$|^0[0-9]{3}

Date Formats

pattern: \d{4}-\d{2}-\d{2}

To allow multiple separators (-, /, .) and enforce MM/DD/YYYY, MM-DD-YYYY, or MM.YYYY:

pattern: (0[1-9]|1[0-2])[.\/-](0[1-9]|[12][0-9]|3[01])[.\/-]\d{4}

Alphanumeric Codes

pattern: [A-Za-z]{3}\d{3}

pattern: XYZ[1-9]\d{2}

Restricting Responses to Country Names

Define numerical responses within a range

You can use the pattern attribute alongside Testable's built-in options like min, max, and sum to further control responses.

Examples:

In a given trial, with multiple response boxes, participants must enter numbers between 10 and 99, and their sum must be exactly 30.

min:10;max:99;sum:30

pattern: \d{4}, min: 1000, max: 9999

Allow your participants to respond