### Method

# WPEJavaScriptCore Class add_methodv

#### Declaration [src]

    void
    jsc_class_add_methodv (
      JSCClass* jsc_class,
      const char* name,
      GCallback callback,
      gpointer user_data,
      GDestroyNotify destroy_notify,
      GType return_type,
      guint n_parameters,
      GType* parameter_types
    )

#### Description [src]

Add method with `name` to `jsc_class`. When the method is called by JavaScript or jsc_value_object_invoke_method(), `callback` is called receiving the class instance as first parameter, followed by the method parameters and then `user_data` as last parameter. When the method is cleared in the `JSCClass` context, `destroy_notify` is called with `user_data` as parameter.

Note that the value returned by `callback` must be transfer full. In case of non-refcounted boxed types, you should use `G_TYPE_POINTER` instead of the actual boxed `GType` to ensure that the instance owned by `JSCClass` is used. If you really want to return a new copy of the boxed type, use #JSC_TYPE_VALUE and return a `JSCValue` created with `jsc_value_new_object()` that receives the copy as the instance parameter.

This method is renamed to `jsc_class_add_method()` in language bindings

#### Parameters

`name`

  Type: `const char*`

  The method name.

  The data is owned by the caller of the method.
  The value is a NUL terminated UTF-8 string.

`callback`

  Type: `GCallback`

  A `GCallback` to be called to invoke method `name` of `jsc_class`.

`user_data`

  Type: `gpointer`

  User data to pass to `callback`.

  The argument can be `NULL`.
  The data is owned by the caller of the method.

`destroy_notify`

  Type: `GDestroyNotify`

  Destroy notifier for `user_data`.

  The argument can be `NULL`.

`return_type`

  Type: `GType`

  The `GType` of the method return value, or `G_TYPE_NONE` if the method is void.

`n_parameters`

  Type: `guint`

  The number of parameter types to follow or 0 if the method doesn’t receive parameters.

`parameter_types`

  Type: An array of `GType`

  A list of `GType`s, one for each parameter, or `NULL`.

  The argument can be `NULL`.
  The length of the array is specified in the `n_parameters` argument.
  The data is owned by the caller of the method.