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How to check whether dynamically attached event listener exists or not?

Here is my problem: is it possible somehow to check for existence of dynamically attached event listener? Or how can I check the status of the "onclick" (?) property in DOM? I have searched internet just like Stack Overflow for a solution, but no luck. Here is my html: ...
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How to iterate over the files of a certain directory, in Java? [duplicate]

I want to process each file in a certain directory using Java. 4 Answers 4 ...
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Add leading zeroes/0's to existing Excel values to certain length

There are many, many questions and quality answers on SO regarding how to prevent leading zeroes from getting stripped when importing to or exporting from Excel. However, I already have a spreadsheet that has values in it that were truncated as numbers when, in fact, they should have been handled a...
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Unfortunately MyApp has stopped. How can I solve this?

I am developing an application, and everytime I run it, I get the message: 20 Answers ...
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How can one check to see if a remote file exists using PHP?

The best I could find, an if fclose fopen type thing, makes the page load really slowly. 22 Answers ...
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Show diff between commits

I am using Git on Ubuntu 10.04 (Lucid Lynx). 11 Answers 11 ...
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Count occurrences of a char in a string using Bash

I need to count the number of occurrences of a char in a string using Bash. 7 Answers ...
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Mysql - How to quit/exit from stored procedure

I have very simple question but i did't get any simple code to exit from SP using Mysql. Can anyone share with me how to do that? ...
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Why does String.valueOf(null) throw a NullPointerException?

according to the documentation, the method String.valueOf(Object obj) returns: 4 Answers ...
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Bogus foreign key constraint fail

I get this error message: 9 Answers 9 ...