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JavaFX 2.2
netscape.javascript

Class JSObject



  • public abstract class JSObject
    extends java.lang.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 LiveConnect Specification for details on how values are converted.

    • Constructor Summary

      Constructors
      Modifier Constructor and Description
      protected JSObject ()
      Constructs a new JSObject.
    • Method Summary

      Methods
      Modifier and Type Method and Description
      abstract java.lang.Object call (java.lang.String methodName, java.lang.Object... args)
      Calls a JavaScript method.
      abstract java.lang.Object eval (java.lang.String s)
      Evaluates a JavaScript expression.
      abstract java.lang.Object getMember (java.lang.String name)
      Retrieves a named member of a JavaScript object.
      abstract java.lang.Object getSlot (int index)
      Retrieves an indexed member of a JavaScript object.
      abstract void removeMember (java.lang.String name)
      Removes a named member of a JavaScript object.
      abstract void setMember (java.lang.String name, java.lang.Object value)
      Sets a named member of a JavaScript object.
      abstract void setSlot (int index, java.lang.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 java.lang.Object call(java.lang.String methodName,
         java.lang.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.
        args - An array of Java object to be passed as arguments to the method.
        Returns:
        Result of the method.
        Throws:
        JSException
      • eval

        public abstract java.lang.Object eval(java.lang.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 java.lang.Object getMember(java.lang.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(java.lang.String name,
         java.lang.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.
        value - The value of the propery.
        Throws:
        JSException
      • removeMember

        public abstract void removeMember(java.lang.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 java.lang.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,
         java.lang.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
JavaFX 2.2

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