17.2. Getting the Number of Characters in a String: length() Function
The length() function helps us get the number of characters in a string. Its syntax is:
String.length(string);
If the function call succeeds, length() returns the number of characters contained in string. It returns invalid if any error occurs.
The following WMLScript examples demonstrate the use of length():
var len = String.length("WMLScript Tutorial");
After executing the above line of script, the len variable has the value 18.
var len = String.length(12345);
After executing the above line of script, the len variable has the value 5.
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Contents at a Glance (Click Here for Full Table of Contents)
- 1. WMLScript Introduction
- 2. Hello World WMLScript Example
- 3. Compiling WMLScript Code
- 4. WMLScript Language Rules
- 5. Defining WMLScript Functions
- 6. Calling WMLScript Functions
- 7. WMLScript Variables
- 8. WMLScript Data Types
- 9. WMLScript Variables Vs WML Variables
- 10. Passing Arguments to Functions By Value and By Reference
- 11. WMLScript Operators
- 12. WMLScript Conditional Statements
- 13. WMLScript Looping Statements
- 14. WMLScript Standard Libraries Overview
- 15. WMLScript WMLBrowser Standard Library
- 16. WMLScript Dialogs Standard Library
- 17. WMLScript String Standard Library
- 18. WMLScript Float Standard Library
- 19. WMLScript Lang Standard Library
- 20. WMLScript URL Standard Library
- 21. WMLScript Example: Validating Form Data
