大约有 43,000 项符合查询结果（耗时：0.0401秒） [XML]
CSS: Change image src on img:hover
....setAttribute('src', 'http://dummyimage.com/100x100/000/fff');
}
<img id="my-img" src="http://dummyimage.com/100x100/000/fff" onmouseover="hover(this);" onmouseout="unhover(this);" />
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What's wrong with using == to compare floats in Java?
...
the correct way to test floats for 'equality' is:
if(Math.abs(sectionID - currentSectionID) < epsilon)
where epsilon is a very small number like 0.00000001, depending on the desired precision.
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MongoDB/NoSQL: Keeping Document Change History
...ew version on each change
I came across the Versioning module of the Mongoid driver for Ruby. I haven't used it myself, but from what I could find, it adds a version number to each document. Older versions are embedded in the document itself. The major drawback is that the entire document is duplic...
How do I find which program is using port 80 in Windows? [duplicate]
...y way you want):
$proc = @{};
Get-Process | ForEach-Object { $proc.Add($_.Id, $_) };
netstat -aon | Select-String "\s*([^\s]+)\s+([^\s]+):([^\s]+)\s+([^\s]+):([^\s]+)\s+([^\s]+)?\s+([^\s]+)" | ForEach-Object {
$g = $_.Matches[0].Groups;
New-Object PSObject |
Add-Member @{ Protocol =...
Bootstrap 3 Collapse show state with Chevron icon
... type="text/javascript" ></script>
<div class="panel-group" id="accordion">
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion...
Force CloudFront distribution/file update
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Good news. Amazon finally added an Invalidation Feature. See the API Reference.
This is a sample request from the API Reference:
POST /2010-08-01/distribution/[distribution ID]/invalidation HTTP/1.0
Host: cloudfront.amazonaws.com
Authorization: [AWS authenticatio...
Convert string to variable name in JavaScript
...s a global variable then window[variableName]
or in your case window["onlyVideo"] should do the trick.
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android button selector
... need to set selector of button in your layout file.
<Button
android:id="@+id/button1"
android:background="@drawable/selector_xml_name"
android:layout_width="200dp"
android:layout_height="126dp"
android:text="Hello" />
and done.
Edit
Following is button_effect.xml...
Default profile in Spring 3.1
...ault")
the bean will only be added to the context if no other profile is identified. If you pass in a different profile, e.g. -Dspring.profiles.active="demo", this profile is ignored.
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impr...
space between divs - display table-cell
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You could also create a one-sided border the same colour as the background. border-right: 10px solid #FFF. This worked well for me when designing a CSS dropdown menu when I wanted some space between table-cell elements.
– armadadriv...