Multiple evaluatejavascript calls causing javascript Type Error (JQuery)

[gehrig44]

If I have my application execute back to back evalutatejavascript calls using the same frame object, the second call always throws a javascript TypeError: Type error message.

If I combine all the javascript/jquery into one evaluatejavascript call, then it works fine. Which is what I am going to do. But, the issue has me concerned since evaluatejavascript is used quite a bit in our application.

streamJavascript("$(\"#on-screen-time\").text(\"" + hourMinAmPmPattern.cap(1) + "\");");
streamJavascript("$(\"#on-screen-ampm\").text(\"" + hourMinAmPmPattern.cap(2) + "\");");
 
void AdiTimeManager::streamJavascript(QString javascript)
{
 QString sJavaScript;
 QTextStream streamJavascript(&sJavaScript);
 streamJavascript << javascript;
 ADIGlobal::sendJavascript(frame, sJavaScript);
}
 
 
void ADIGlobal::sendJavascript(QWebFrame *frame, QString sJavascript)
{
 if ( sJavascript != "" )
 {
  if ( Log4Qt::Logger::logger("ADIGlobal") )
  {
   Log4Qt::Logger::logger("ADIGlobal")->debug() << "sendJavascript " << sJavascript;
  }
  frame->evaluateJavaScript(sJavascript);
 }
}
 
 
 
08:38:16.135  DEBUG [ADIGlobal] sendJavascript $("#on-screen-time").text("8:38");
08:38:16.225  DEBUG [ADIGlobal] sendJavascript $("#on-screen-ampm").text("AM");
08:38:16.225  DEBUG [AdiWebPage] TypeError: Type error
08:38:16.225  DEBUG [AdiWebPage] 1:

streamJavascript("$(\"#on-screen-time\").text(\"" + hourMinAmPmPattern.cap(1) + "\");");
streamJavascript("$(\"#on-screen-ampm\").text(\"" + hourMinAmPmPattern.cap(2) + "\");");

void AdiTimeManager::streamJavascript(QString javascript)
{
 QString sJavaScript;
 QTextStream streamJavascript(&sJavaScript);
 streamJavascript << javascript;
 ADIGlobal::sendJavascript(frame, sJavaScript);
}


void ADIGlobal::sendJavascript(QWebFrame *frame, QString sJavascript)
{
 if ( sJavascript != "" )
 {
  if ( Log4Qt::Logger::logger("ADIGlobal") )
  {
   Log4Qt::Logger::logger("ADIGlobal")->debug() << "sendJavascript " << sJavascript;
  }
  frame->evaluateJavaScript(sJavascript);
 }
}



08:38:16.135  DEBUG [ADIGlobal] sendJavascript $("#on-screen-time").text("8:38");
08:38:16.225  DEBUG [ADIGlobal] sendJavascript $("#on-screen-ampm").text("AM");
08:38:16.225  DEBUG [AdiWebPage] TypeError: Type error
08:38:16.225  DEBUG [AdiWebPage] 1:

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---

Added after 57 minutes:

Update.

Apparently, this has nothing to do with multiple calls. All calls are throwing the error, but after every other evaluatejavascript call.

[gehrig44]

I found a work around.. however I dont have any idea why it works. There is a form element further down the page:

<form><input type="button" style="display:none;" class="ENTER" /></form>

<form><input type="button" style="display:none;" class="ENTER" /></form>

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When changing the input type to "text" it everything works fine. Luckily, the input type doesn't matter for me.

I really have no idea why this would matter.