Public Members can be accessed anywhere using the "." notation.
Private Members can only be accessed within a constructor and public method.
Public methods and variables are declared using the "this" keyword like "this.variableName".
A Public method is accessed using a constructor; this technique is usually used to initialize public instance variables.
var objPublicPrivateClassg = new PublicPrivateClass();
Code
  1. /*Comment
  2. <CodeItem type="Method">Class Name</CodeItem>
  3. <summary>Define the Class name as a function</summary>
  4. <params>
  5. </params>
  6. <return></return>
  7. Comment*/
  8. function PublicPrivateClass() {
  9. //PublicMethods
  10. this.publicMethods = {
  11. /*Comment
  12. <CodeItem type="Method">InitializePageControlEvents</CodeItem>
  13. <summary>Initialize the control</summary>
  14. <params>
  15. </params>
  16. <return></return>
  17. Comment*/
  18. InitializePageControlEvents: function () {
  19. privateMethods.PrivateTestMethod();
  20. }
  21. };
  22. // Private Methods
  23. privateMethods = {
  24. /*Comment
  25. <CodeItem type="Method">PrivateTestMethod</CodeItem>
  26. <summary>Show the alert Message</summary>
  27. <params>
  28. </params>
  29. <return></return>
  30. Comment*/
  31. PrivateTestMethod: function () {
  32. alert("Calling Private Method.");
  33. },
  35. PrivateTestMethod2: function () {
  36. alert("PrivateTestMethod2");
  37. }
  38. };
  39. }
HTML Code
Calling a Public Method:
  1. <script type="text/javascript">
  2. function CallMethod() {
  3. try {
  4. var objPublicPrivateClassg = new PublicPrivateClass();
  5. //InitializePageControlEvents is Public method
  6. objPublicPrivateClassg.publicMethods.InitializePageControlEvents();
  7. }
  8. catch (err) {
  10. alert(err.message);
  11. }
  12. }
  13. </script>
HTML Code
Calling a Public Method:
  1. <script type="text/javascript">
  2. function CallMethod() {
  3. try {
  5. var objPublicPrivateClassg = new PublicPrivateClass();
  6. //InitializePageControlEvents is Public method
  7. objPublicPrivateClassg.publicMethods.InitializePageControlEvents();
  8. }
  9. catch (err) {
  10. alert(err.message);
  11. }
  12. }
  13. </script>
Output
Public-and-private-methods-in-JavaScript1.jpg
  1. <script type="text/javascript">
  2. function CallMethod() {
  3. try {
  4. var objPublicPrivateClassg = new PublicPrivateClass();
  5. //InitializePageControlEvents is Private method
  6. objPublicPrivateClassg.privateMethods.PrivateTestMethod();
  7. }
  8. catch (err) {
  9. alert(err.message);
  10. }
  11. }
  12. </script>
Output
Output-Public-and-private-methods-in-JavaScript.jpg