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querySelector and querySelectorAll vs getElementsByClassName and getElementById in JavaScript
I would like to know what exactly is the difference between querySelector and querySelectorAll against getElementsByClassName and getElementById ?
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Auto Resize Image in CSS FlexBox Layout and keeping Aspect Ratio?
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Is it also possible to do this for the height dimension if the screen gets smaller?
– confile
Jan 14 '14 at 0:43
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IE8 support for CSS Media Query
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Internet Explorer versions before IE9 do not support media queries.
If you are looking for a way of degrading the design for IE8 users, you may find IE's conditional commenting helpful. Using this, you can specify an IE 8/7/6 specific style sheet which over writes the previous rules.
For exa...
RESTful web service - how to authenticate requests from other services?
... option but it does have the benefit of being quite simple. The client certificate is also good but is it really much different? There's a cert on the server and one on the client. It's main advantage is that it's harder to brute force. Hopefully you've got other protections in place to protect agai...
Android Camera : data intent returns null
...non-null intent only when passing back a thumbnail in the returned Intent. If you pass EXTRA_OUTPUT with a URI to write to, it will return a null intent and the picture is in the URI that you passed in.
You can verify this by looking at the camera app's source code on GitHub:
https://github.com/a...
No submodule mapping found in .gitmodule for a path that's not a submodule
...e index indicating a submodule (a 'folder' with a special mode 160000).
If that special entry path isn't referenced in the .gitmodule (like 'Classes/Support/Three20' in the original question), then you need to remove it, in order to avoid the "No submodule mapping found in .gitmodules for path" e...
When to use nested classes and classes nested in modules?
...n’t have that behaviour.
In Ruby,
class Car
class Wheel
end
end
differs from
class Car
end
class Wheel
end
only in the name of the class Wheel vs. Car::Wheel. This difference in name can make explicit to programmers that the Car::Wheel class can only represent a car wheel, as opposed t...
AngularJS - Any way for $http.post to send request parameters instead of JSON?
...r) {
$httpProvider.defaults.transformRequest = function(data){
if (data === undefined) {
return data;
}
return $.param(data);
}
});
That way all calls to $http.post will automatically transform the body to the same param format used by the jQuery $.post ...
How to check version of python modules?
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print(contruct.__version__) if using Python 3.*
– jacanterbury
Nov 5 '18 at 16:19
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show 3 mo...
How to efficiently concatenate strings in go
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If you know the total length of the string that you're going to preallocate then the most efficient way to concatenate strings may be using the builtin function copy. If you don't know the total length before hand, do not use...