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FormData.append(“key”, “value”) is not working

...rmdata.get(key) and more very useful methods Original answer: What I usually do to 'debug' a FormData object, is just send it (anywhere!) and check the browser logs (eg. Chrome devtools' Network tab). You don't need a/the same Ajax framework. You don't need any details. Just send it: var xhr = ...
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How do I create delegates in Objective-C?

...ign it as the web view's delegate: MyClass *instanceOfMyClass = [[MyClass alloc] init]; myWebView.delegate = instanceOfMyClass; On the UIWebView side, it probably has code similar to this to see if the delegate responds to the webViewDidStartLoad: message using respondsToSelector: and send it if ...
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How to drop column with constraint?

...'alter table tbloffers drop constraint ['+dc.NAME+N']' from sys.default_constraints dc JOIN sys.columns c ON c.default_object_id = dc.object_id WHERE dc.parent_object_id = OBJECT_ID('tbloffers') AND c.name = N'checkin' IF @@ROWCOUNT = 0 BREAK EXEC (@sql) END ...
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How do I run msbuild from the command line using Windows SDK 7.1?

I'm setting up .NET 4.0 support on our CI server. I've installed .NET 4.0, and the .NET tools from the Windows 7.1 SDK. 7 A...
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iPhone: How to get current milliseconds?

... it like this: NSTimeInterval myInterval = NSDate.timeIntervalSince1970;// all those brackets are really old fashioned if you ask me. – Pizzaiola Gorgonzola Oct 2 '13 at 13:27 ...
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How to return result of a SELECT inside a function in PostgreSQL?

... -- potential ambiguity END $func$ LANGUAGE plpgsql; Call: SELECT * FROM word_frequency(123); Explanation: It is much more practical to explicitly define the return type than simply declaring it as record. This way you don't have to provide a column definition list with eve...
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Unzip All Files In A Directory

I have a directory of ZIP files (created on a Windows machine). I can manually unzip them using unzip filename , but how can I unzip all the ZIP files in the current folder via the shell? ...
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How do I test for an empty JavaScript object?

...do you post answer including jQuery if the question is not about jQuery at all? – Eru Oct 1 '12 at 14:10 48 ...
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Can dplyr package be used for conditional mutating?

...and the conditions (except for the default value of NA at the end) are mutually exclusive, as is the case in the question, then we can use an arithmetic expression such that each term is multiplied by the desired result using na_if at the end to replace 0 with NA. df %>% mutate(g = 2 * (a == 2 ...
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Node.js project naming conventions for files & folders

... your tests An example which uses this setup is nodejs-starter. I personally changed this setup to: / /etc - contains configuration /app - front-end javascript files /config - loads config /models - loads models /bin - helper scripts /lib - back-end express files /config - lo...