1. /**
  2. * Wraps text block validation logic with hard-coded limits.
  3. *
  4. * @param {string} text The text to validate.
  5. * @param {object} limits An object containing validation limits.
  6. * Example: { minLength: 5, maxLength: 100 }
  7. * @returns {object} An object containing validation results:
  8. * { isValid: boolean, message: string }
  9. */
  10. function validateText(text, limits) {
  11. if (typeof text !== 'string') {
  12. return { isValid: false, message: "Input must be a string." };
  13. }
  15. let isValid = true;
  16. let message = "";
  18. if (limits.minLength && text.length < limits.minLength) {
  19. isValid = false;
  20. message = `Minimum length is ${limits.minLength}.`;
  21. }
  23. if (limits.maxLength && text.length > limits.maxLength) {
  24. isValid = false;
  25. message = `Maximum length is ${limits.maxLength}.`;
  26. }
  28. if (limits.pattern && !limits.pattern.test(text)) {
  29. isValid = false;
  30. message = limits.patternErrorMessage || "Invalid format.";
  31. }
  33. if (!isValid) {
  34. return { isValid: false, message: message };
  35. } else {
  36. return { isValid: true, message: "" };
  37. }
  38. }
  40. // Example usage:
  41. // const text = "This is a test";
  42. // const limits = { minLength: 5, maxLength: 20 };
  43. // const result = validateText(text, limits);
  44. // console.log(result); // Output: { isValid: true, message: '' }
  46. // const text2 = "Short";
  47. // const limits2 = {minLength: 10, maxLength: 20};
  48. // const result2 = validateText(text2, limits2);
  49. // console.log(result2); // Output: {isValid: false, message: 'Minimum length is 10.'}

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