[JavaScript] Class-A simple JavaScript class definition example

A simple JavaScript class definition example

A simple example of JavaScript Public Member definition, Private member definition, and privileged method definition is provided.

Java code

1. <SCRIPT>
2. // Define a javascript class
3. Function jsclass (privateparam/**/, publicparam) {// Constructor
4. VaR primember = privateparam; // Private variable
5. This. Pubmember = publicparam; // public variable
6. // Define a private Method
7. Function primethod (){
8. Return"Primethod ()";
9. }
10. // Define the privileged method
11. // The privileged method can access all members.
12. This. Privilegedmethod = function (){
13. VaR STR = "this is a privileged method. I called/N ";
14. STR + = "private variable:" + primember + "/N ";
15. STR + = "Private method:" + primethod () + "/N ";
16. STR + = "public variables:" +This. Pubmember + "/N ";
17. STR + = "public method:" +This. Pubmethod ();
19. ReturnSTR;
20. }
21. }
22. // Add public methods
23. // Private variables and methods cannot be called
24. Jsclass. Prototype. pubmethod = function (){
25. Return"Pubmethod ()";
26. }
28. // Instances using jsclass
29. Jsobject =NewJsclass ("primember", "pubmember ");
31. // Alert (jsobject. pubmember); // The pubmember information is displayed.
32. // Alert (jsobject. primember); // The undefined information is displayed.
33. // Alert (jsobject. pubmethod (); // The pubmethod information is displayed.
34. // Alert (jsobject. primethod (); // The error "the object does not support this attribute or method" is displayed.
35. Alert (jsobject. privilegedmethod ());
36. </SCRIPT>