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Check if a div exists with jquery [duplicate]

...myDiv.length){ //you can now reuse $myDiv here, without having to select it again. } }); A selector always returns a jQuery object, so there shouldn't be a need to check against null (I'd be interested if there is an edge case where you need to check for null - but I don't think the...
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Count immediate child div elements using jQuery

...est to see the speed difference and the children() method beaten the child selector (#foo > div) approach by at least 60% in Chrome (canary build v15) 20-30% in Firefox (v4). By the way, needless to say, these two approaches produce same results (in this case, 1000). [Update] I've updated the t...
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Why am I getting “Unable to find manifest signing certificate in the certificate store” in my Excel

...the Project's properties page, click on Signing tab and either Click on Select from store Click on Select from file Click on Create test certificate Once either of these is done, you should be able to build it again. sh...
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JSON.Net Self referencing loop detected

...overload: JsonConvert.SerializeObject((from a in db.Events where a.Active select a).ToList(), Formatting.Indented, new JsonSerializerSettings() { ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore } ); If you'd like to make this the default behaviour, add a Glob...
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Adjusting the Xcode iPhone simulator scale and size [duplicate]

...teps : Goto Window->Uncheck Show Device Bezels Goto Window->select zoom after doing this you can resize your simulator by dragging edges of simulator. Pixel Accurate : Its to display your simulator in same size as Physical device pixels, if your screen size doesn't have enough re...
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How do I open an old MVC project in Visual Studio 2012 or Visual Studio 2013?

... modify the project file. To do so right click on the unloaded project and select Edit. Which will open the project file as an XML text file. Find the ProjectTypeGuids node which should look something like this: <ProjectTypeGuids> {F85E285D-A4E0-4152-9332-AB1D724D3325};{349c5851-65df-11da...
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How to run SQL script in MySQL?

... If the purpose of writing to file is taking data dump, I guess SELECT ... INTO OUTFILE /path/to/file.csv is more efficient way. See options and syntax here - dev.mysql.com/doc/refman/5.7/en/select-into.html – Anis Feb 21 '18 at 6:43 ...
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Can I find events bound on an element with jQuery?

... I'm attempting your solution but still getting undefined returned for the selector. I used $('#elem').bind('click', function() {}); if that would make a difference. – Marcus Oct 19 '12 at 2:13 ...
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WCF on IIS8; *.svc handler mapping doesn't work

... Windows 8 with IIS8 Hit Windows+X Select Programs and Features (first item on list) Select Turn Windows Features on or off on the left Expand .NET Framework 4.5 Advanced Services Expand WCF Services Enable HTTP Activation ...
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How can I inspect disappearing element in a browser?

... An alternative method in Chrome: Open devTools (F12). Select the "Sources" tab. While the element you want is displayed, press F8 (or Ctrl+/). This will break script execution and "freeze" the DOM exactly as it is displayed. From this point, use Ctrl+Shift+C to select the elemen...