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“Invalid form control” only in Google Chrome

The code below works well in Safari but in Chrome and Firefox the form will not submit. Chrome console logs the error An invalid form control with name='' is not focusable . Any ideas? ...
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Why should we NOT use sys.setdefaultencoding(“utf-8”) in a py script?

I have seen few py scripts which use this at the top of the script. In what cases one should use it? 4 Answers ...
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JSR-303 @Valid annotation not working for list of child objects

My main classes is 4 Answers 4 ...
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ASP.NET web.config: configSource vs. file attributes

Within an web.config -file in an ASP.NET-application some sections of config, like appSettings and connectionStrings , supports the attributes file and configSource . ...
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Which is the first integer that an IEEE 754 float is incapable of representing exactly?

For clarity, if I'm using a language that implements IEE 754 floats and I declare: 2 Answers ...
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How does IPython's magic %paste work?

I want to copy already indented Python code / whole functions and classes into IPython. Everytime I try the indentation is screwed up and I get following error message: ...
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How to get the last date of a particular month with JodaTime?

I need to get the first date (as org.joda.time.LocalDate ) of a month and the last one. Getting the first is trivial, but getting the last seems to need some logic as months have different length and February length even varies over years. Is there a mechanism for this already built in to JodaTime ...
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Is there any way to put malicious code into a regular expression?

I want to add regular expression search capability to my public web page. Other than HTML encoding the output, do I need to do anything to guard against malicious user input? ...
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Can an angular directive pass arguments to functions in expressions specified in the directive's att

I have a form directive that uses a specified callback attribute with an isolate scope: 5 Answers ...
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prototype based vs. class based inheritance

In JavaScript, every object is at the same time an instance and a class. To do inheritance, you can use any object instance as a prototype. ...