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How to get child element by class name?
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Use doc.childNodes to iterate through each span, and then filter the one whose className equals 4:
var doc = document.getElementById("test");
var notes = null;
for (var i = 0; i < doc.childNodes.length; i++) {
if (doc.childNodes[i].classNa...
How to override the properties of a CSS class using another CSS class
...ave
.left { background: blue }
e.g. any of the following would override it:
a.background-none { background: none; }
body .background-none { background: none; }
.background-none { background: none !important; }
The first two “win” by selector specificity; the third one wins by !important, a...
There is no ListBox.SelectionMode=“None”, is there another way to disable selection in a listbox?
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Approach 1 - ItemsControl
Unless you need other aspects of the ListBox, you could use ItemsControl instead. It places items in the ItemsPanel and doesn't have the concept of selection.
<ItemsControl ItemsSource="{Binding MyItems}" /&g...
Positioning MKMapView to show multiple annotations at once
I've got several annotations I want to add to my MKMapView (it could 0-n items, where n is generally around 5). I can add the annotations fine, but I want to resize the map to fit all annotations onscreen at once, and I'm not sure how to do this.
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Rails: What's a good way to validate links (URLs)?
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Validating an URL is a tricky job. It's also a very broad request.
What do you want to do, exactly? Do you want to validate the format of the URL, the existence, or what? There are several possibilities, depending on what you want to do.
A regular expression c...
mongo - couldn't connect to server 127.0.0.1:27017
I am coming from riak and redis where I never had an issue with this services starting, or to interact.
38 Answers
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How do I revert all local changes in Git managed project to previous state?
I have a project in which I ran git init .
After several commits, I did git status which told me everything was up to date and there were no local changes.
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How to highlight text using javascript
Can someone help me with a javascript function that can highlight text on a web page.
And the requirement is to - highlight only once, not like highlight all occurrences of the text as we do in case of search.
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Passing multiple error classes to ruby's rescue clause in a DRY fashion
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You can use an array with the splat operator *.
EXCEPTIONS = [FooException, BarException]
begin
a = rand
if a > 0.5
raise FooException
else
raise BarException
end
rescue *EXCEPTIONS
puts "rescued!"
end
If you are going to ...
Check if array is empty or null
...k if an array is empty or null in jQuery. I tried array.length === 0 but it didn't work. It did not throw any error either.
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