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How can I determine if a JavaScript variable is defined in a page? [duplicate]

... 162 I got it to work using if (typeof(x) != "undefined") ...
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What is the best way to check for Internet connectivity using .NET?

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How can I lock a file using java (if possible)

... answered Sep 24 '08 at 16:20 Tom Hawtin - tacklineTom Hawtin - tackline 139k3030 gold badges204204 silver badges288288 bronze badges ...
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Embedding JavaScript engine into .NET [closed]

...ipt. – Alan Macdonald Nov 24 '11 at 16:39 6 Noesis (original developing company) lost interest in...
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Stretch and scale a CSS image in the background - with CSS only

... Vashishtha JogiVashishtha Jogi 11.4k22 gold badges1616 silver badges2020 bronze badges 13 ...
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Only parameterless constructors and initializers are supported in LINQ to Entities

... 16 Be aware that this will select all columns at the db level where as normally it will only select the required columns ...
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std::unique_lock or std::lock_guard?

... works for me :) – underscore_d Jul 16 '16 at 17:37  |  show...
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Gmail's new image caching is breaking image links in newsletter

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How is __eq__ handled in Python and in what order?

...s it a PEP ? – Mr_and_Mrs_D May 30 '16 at 21:05 base on this answer and accompanied comments , this just left me more ...
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What is the best way to convert seconds into (Hour:Minutes:Seconds:Milliseconds) time?

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