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自定义下载器扩展：个性化下载进度展示 - App Inventor 2 拓展 - 清泛IT社...
...p
Get the current download ID.
Cancel all ongoing downloads.
This block converts the bytes into KB and MB automatically, You can use own calculation for converting bytes into big units.
Get the downloaded size for a specific download ID.
These blocks pause/resume/cancel the download f...
What is the purpose of backbone.js?
...h the learning curve associated with a framework. If you're still building PHP, Java, or something else sites where the back end server is still doing all the heavy lifting of building the web pages upon request by the user and JavaScript/jQuery is just icing upon that process, you aren't going to n...
How can I have ruby logger log output to stdout as well as file?
...st(logger)
Module.new do
define_method(:add) do |*args, &block|
logger.add(*args, &block)
super(*args, &block)
end
define_method(:<<) do |x|
logger << x
super(x)
end
define_method(:close) ...
How to tell if a tag failed to load
...r (for
example a DNS error, or an HTTP 404
error) Executing the script block must
just consist of firing a simple event
named error at the element.
This means you don't have to do any error prone polling and can combine it with async and defer attribute to make sure the script is not block...
Using Position Relative/Absolute within a TD?
...border-collapse:collapse). It didn't exclude them from possible containing blocks of the absolutely positioned descendants. So the behavior of Firefox turned out to be just a bug, which was fixed in 2014.
– Ilya Streltsyn
Jan 30 '19 at 20:12
...
How can I count text lines inside an DOM element? Can I?
...work in simplest case (like my example). If there are spans inside, inline-block elements and so on, straightforward division by (parent) font-size is worthless. Still, it is better than nothing, thanks.
– buti-oxa
Apr 24 '09 at 16:38
...
List of ANSI color escape sequences
...ete set of ANSI escape codes: ascii-table.com/ansi-escape-sequences-vt-100.php
– formixian
Mar 26 '18 at 19:18
4
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How to write a Ruby switch statement (case…when) with regex and backreferences?
...foo.match(re) }
# Do what you will with `m` now.
Declaring m outside the block allows it to still be available after find is done with the block and find will stop as soon as the block returns a true value so you get the same shortcutting behavior that a switch gives you. This gives you the full M...
Semaphore vs. Monitors - what's the difference?
...similar to P and V operations on counting semaphores.
A wait statement can block a process's execution, while a signal statement can cause another process to be unblocked. However, there are some differences between them. When a process executes a P operation, it does not necessarily block that proc...
jquery sortable placeholder height problem
...
Are your elements display: block ? Inline elements might make the placeholder not keep the height correctly. Eg. this jsFiddle seems to have a similar problem to the one you described. Adding display: block to the .portlet class fixes it.
...