在QT中重新加载网页并模拟重新加载javascript

我有一个QT应用程序，它使用带有Javascript/Coffeescript和JQuery的网页与用户交互。在某些情况下，我需要重新加载javascript

然而，在javascript开始时，我设置了激活javascript方法的信号

$ = jQuery
p = 
  rangeSliders: '#rangeSliders'

m =
  init ->
    d = $.extend {}, p
    mm.connectBackend(d) if typeof StatusBridge is 'object'

mm =
  connectBackend: (d) ->
    StatusBridge.updateAirconLimit.connect (km) ->
    log_debug "receiving aircon limit"
    airconLimit = new KmItem
      value: parseInt(km)
    $(d.rangeSliders).rangeometer('getAirconLimit').trigger 'update', airconLimit
    log_debug "receiving aircon limit done"

log\u debug

只需通过内部日志系统打印一条消息

如果出现错误，我将触发

QWebView

的

reload（）

插槽：

  bool WebPage::shouldInterruptJavaScript()
  {
     QApplication::processEvents( QEventLoop::AllEvents );
     ECONNECT_LOG( Fatal, 108100004, "Javascript has permanent errors" );
     emit requestReload();
     return false;
  }

及

在网页类之外的位置

但是，每当重新加载网页时，之后回调似乎会被注册多次：

2014-Mar-28 13:18:08;GuiBackend;4750;4750;D;108107022;../../src/Gui/StatusBridge.cc:221;Message from javascript: [ receiving aircon limit ]
2014-Mar-28 13:18:08;GuiBackend;4750;4750;D;108107022;../../src/Gui/StatusBridge.cc:221;Message from javascript: [ receiving aircon limit done ]
2014-Mar-28 13:18:08;GuiBackend;4750;4750;D;108107022;../../src/Gui/StatusBridge.cc:221;Message from javascript: [ receiving aircon limit ]
2014-Mar-28 13:18:08;GuiBackend;4750;4750;D;108107022;../../src/Gui/StatusBridge.cc:221;Message from javascript: [ receiving aircon limit done ]
2014-Mar-28 13:18:08;GuiBackend;4750;4750;D;108107022;../../src/Gui/StatusBridge.cc:221;Message from javascript: [ receiving aircon limit ]
2014-Mar-28 13:18:08;GuiBackend;4750;4750;D;108107022;../../src/Gui/StatusBridge.cc:221;Message from javascript: [ receiving aircon limit done ]

有没有办法让QT重新加载HTML和Javascript部分？或者QT处理C++与JavaScript绑定的特殊性？如果是这样，在发生崩溃的情况下，重置网页的最佳方式是什么

更新

因为这可能很重要：

我从一个槽内添加C++对象到JavaScript，它响应于

javaScriptWindowObjectCleared（）

信号

2014-Mar-28 13:18:08;GuiBackend;4750;4750;D;108107022;../../src/Gui/StatusBridge.cc:221;Message from javascript: [ receiving aircon limit ]
2014-Mar-28 13:18:08;GuiBackend;4750;4750;D;108107022;../../src/Gui/StatusBridge.cc:221;Message from javascript: [ receiving aircon limit done ]
2014-Mar-28 13:18:08;GuiBackend;4750;4750;D;108107022;../../src/Gui/StatusBridge.cc:221;Message from javascript: [ receiving aircon limit ]
2014-Mar-28 13:18:08;GuiBackend;4750;4750;D;108107022;../../src/Gui/StatusBridge.cc:221;Message from javascript: [ receiving aircon limit done ]
2014-Mar-28 13:18:08;GuiBackend;4750;4750;D;108107022;../../src/Gui/StatusBridge.cc:221;Message from javascript: [ receiving aircon limit ]
2014-Mar-28 13:18:08;GuiBackend;4750;4750;D;108107022;../../src/Gui/StatusBridge.cc:221;Message from javascript: [ receiving aircon limit done ]