### Method

# WPEJavaScriptCore Context push_exception_handler

#### Declaration [src]

    void
    jsc_context_push_exception_handler (
      JSCContext* context,
      JSCExceptionHandler handler,
      gpointer user_data,
      GDestroyNotify destroy_notify
    )

#### Description [src]

Push an exception handler in `context`. Whenever a JavaScript exception happens in the `JSCContext`, the given `handler` will be called. The default `JSCExceptionHandler` simply calls `jsc_context_throw_exception()` to throw the exception to the `JSCContext`. If you don’t want to catch the exception, but only get notified about it, call `jsc_context_throw_exception()` in `handler` like the default one does. The last exception handler pushed is the only one used by the `JSCContext`, use `jsc_context_pop_exception_handler()` to remove it and set the previous one. When `handler` is removed from the context, `destroy_notify` i called with `user_data` as parameter.

#### Parameters

`handler`

  Type: `JSCExceptionHandler`

  A `JSCExceptionHandler`.

`user_data`

  Type: `gpointer`

  User data to pass to `handler`.

  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`.