netscape.javascript

Class JSObject

java.lang.Object

netscape.javascript.JSObject

public abstract class JSObject
extends Object

Allows Java code to manipulate JavaScript objects.

When a JavaScript object is passed or returned to Java code, it is wrapped in an instance of JSObject. When a JSObject instance is passed to the JavaScript engine, it is unwrapped back to its original JavaScript object. The JSObject class provides a way to invoke JavaScript methods and examine JavaScript properties.

Any data returned from the JavaScript engine to Java is converted to Java data types. Certain data passed to the JavaScript engine is converted to JavaScript data types. See the section on Data Type Conversions in the new LiveConnect Specification for details on how values are converted.

Constructor Summary

Constructors
Modifier Constructor and Description

protected JSObject()
Constructs a new JSObject.

Constructors
Modifier	Constructor and Description
`protected`	`JSObject()` Constructs a new JSObject.

Method Summary

All MethodsStatic MethodsInstance MethodsAbstract MethodsConcrete Methods
Modifier and Type	Method and Description
`abstract Object`	`call(String methodName, Object... args)` Calls a JavaScript method.
`abstract Object`	`eval(String s)` Evaluates a JavaScript expression.
`abstract Object`	`getMember(String name)` Retrieves a named member of a JavaScript object.
`abstract Object`	`getSlot(int index)` Retrieves an indexed member of a JavaScript object.
`static JSObject`	`getWindow(Applet applet)` Returns a JSObject for the window containing the given applet.
`abstract void`	`removeMember(String name)` Removes a named member of a JavaScript object.
`abstract void`	`setMember(String name, Object value)` Sets a named member of a JavaScript object.
`abstract void`	`setSlot(int index, Object value)` Sets an indexed member of a JavaScript object.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- JSObject
```
protected JSObject()
```
  Constructs a new JSObject. Users should not call this method nor subclass JSObject.

Method Detail
- call
```
public abstract Object call(String methodName,
                            Object... args)
                     throws JSException
```
  Calls a JavaScript method. Equivalent to "this.methodName(args[0], args[1], ...)" in JavaScript.
  
  Parameters:
  
  methodName - The name of the JavaScript method to be invoked.
  
  Returns:
  
  Result of the method.
  
  Throws:
  
  JSException
- eval
```
public abstract Object eval(String s)
                     throws JSException
```
  Evaluates a JavaScript expression. The expression is a string of JavaScript source code which will be evaluated in the context given by "this".
  
  Parameters:
  
  s - The JavaScript expression.
  
  Returns:
  
  Result of the JavaScript evaluation.
  
  Throws:
  
  JSException
- getMember
```
public abstract Object getMember(String name)
                          throws JSException
```
  Retrieves a named member of a JavaScript object. Equivalent to "this.name" in JavaScript.
  
  Parameters:
  
  name - The name of the JavaScript property to be accessed.
  
  Returns:
  
  The value of the propery.
  
  Throws:
  
  JSException
- setMember
```
public abstract void setMember(String name,
                               Object value)
                        throws JSException
```
  Sets a named member of a JavaScript object. Equivalent to "this.name = value" in JavaScript.
  
  Parameters:
  
  name - The name of the JavaScript property to be accessed.
  
  Throws:
  
  JSException
- removeMember
```
public abstract void removeMember(String name)
                           throws JSException
```
  Removes a named member of a JavaScript object. Equivalent to "delete this.name" in JavaScript.
  
  Parameters:
  
  name - The name of the JavaScript property to be removed.
  
  Throws:
  
  JSException
- getSlot
```
public abstract Object getSlot(int index)
                        throws JSException
```
  Retrieves an indexed member of a JavaScript object. Equivalent to "this[index]" in JavaScript.
  
  Parameters:
  
  index - The index of the array to be accessed.
  
  Returns:
  
  The value of the indexed member.
  
  Throws:
  
  JSException
- setSlot
```
public abstract void setSlot(int index,
                             Object value)
                      throws JSException
```
  Sets an indexed member of a JavaScript object. Equivalent to "this[index] = value" in JavaScript.
  
  Parameters:
  
  index - The index of the array to be accessed.
  
  Throws:
  
  JSException
- getWindow
```
public static JSObject getWindow(Applet applet)
                          throws JSException
```
  Returns a JSObject for the window containing the given applet.
  
  Parameters:
  
  applet - The applet.
  
  Returns:
  
  JSObject for the window containing the given applet.
  
  Throws:
  
  JSException

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Documentation extracted from JavaFX API Documentation.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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Class JSObject

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

JSObject

Method Detail

call

eval

getMember

setMember

removeMember

getSlot

setSlot

getWindow