Implementation of stringbuilder class in Javascript

A simple stringbuilder class implementation

2. // Initializes a new instance of the stringbuilder class
4. // And appends the given value if supplied
6. Function stringbuilder (value)
7. {
8. This. Strings = new array ("");
9. This. append (value );
10. }
11. 
    
13. // Appends the given value to the end of this instance.
15. Stringbuilder. Prototype. append = function (value)
16. {
17. If (value)
18. {
19. This. Strings. Push (value );
20. }
21. }
22. 
    
24. // Clears the string buffer
26. Stringbuilder. Prototype. Clear = function ()
27. {
28. This. Strings. Length = 1;
29. }
30. 
    
32. // Converts this instance to a string.
34. Stringbuilder. Prototype. tostring = function ()
35. {
36. Return this. Strings. Join ("");
37. }
38. 
    

The code looks simple and straightforward. It is actually implemented using array, push, join, etc. The following describes how to use this class

1. // Create a stringbuilder
3. VaR sb = new stringbuilder ();
4. 
   
6. // Append some text
8. SB. append ("some of those preparing for international ");
9. SB. append ("exams such as the TOEFL ");
10. SB. append ("need extra practice for the listening section ");
11. 
    
13. // Get the full string value
15. VaR S = sb. tostring ();
18. Alert (s );

It is very simple and does not require much explanation. If you use stringbuilder in. net, you will also know how to use it.

(See more: http://www.codeproject.com/KB/scripting/stringbuilder.aspx)