Days Between Dates Calculator

Features of this calculator:

1. Input Fields:
   • Two date input fields allow users to select the start and end dates.
2. Validation:
   • Checks if both dates are selected and ensures the end date is not earlier than the start date.
3. Real-Time Calculation:
   • Calculates the difference in days between the two selected dates.
4. Result Display:
   • Dynamically updates the result on the page.