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Public and Private Methods in JavaScript
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Yogesh Jaiswal
4y
15k
0
0
100
Article
PublicPrivateMethods.zip
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
/*Comment
<CodeItem type="Method">Class Name</CodeItem>
<summary>Define the Class name as a function</summary>
<params>
</params>
<return></return>
Comment*/
function
PublicPrivateClass() {
//PublicMethods
this
.publicMethods = {
/*Comment
<CodeItem type="Method">InitializePageControlEvents</CodeItem>
<summary>Initialize the control</summary>
<params>
</params>
<return></return>
Comment*/
InitializePageControlEvents:
function
() {
privateMethods.PrivateTestMethod();
}
};
// Private Methods
privateMethods = {
/*Comment
<CodeItem type="Method">PrivateTestMethod</CodeItem>
<summary>Show the alert Message</summary>
<params>
</params>
<return></return>
Comment*/
PrivateTestMethod:
function
() {
alert(
"Calling Private Method."
);
},
PrivateTestMethod2:
function
() {
alert(
"PrivateTestMethod2"
);
}
};
}
HTML Code
Calling a Public Method:
<script type=
"text/javascript"
>
function
CallMethod() {
try
{
var
objPublicPrivateClassg =
new
PublicPrivateClass();
//InitializePageControlEvents is Public method
objPublicPrivateClassg.publicMethods.InitializePageControlEvents();
}
catch
(err) {
alert(err.message);
}
}
</script>
HTML Code
Calling a Public Method:
<script type=
"text/javascript"
>
function
CallMethod() {
try
{
var
objPublicPrivateClassg =
new
PublicPrivateClass();
//InitializePageControlEvents is Public method
objPublicPrivateClassg.publicMethods.InitializePageControlEvents();
}
catch
(err) {
alert(err.message);
}
}
</script>
Output
<script type=
"text/javascript"
>
function
CallMethod() {
try
{
var
objPublicPrivateClassg =
new
PublicPrivateClass();
//InitializePageControlEvents is Private method
objPublicPrivateClassg.privateMethods.PrivateTestMethod();
}
catch
(err) {
alert(err.message);
}
}
</script>
Output
Methods in JavaScript
Private Methods in JavaScript
Public Methods
Public Methods in JavaScript
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