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How to check if element is visible after scrolling?
...them are only visible if you scroll down the page. Is there any way I can know if an element is now in the visible part of the page?
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Is there a way to check which CSS styles are being used or not used on a web page?
Want to know which CSS styles are currently being used on a web page.
7 Answers
7
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A Regex that will never be matched by anything
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Interestingly, my original with a simple literal that I "know" won't appear in my input turns out to be fastest, in Python. With a 5MB input string, and using this in a sub() operation, (?!x)x takes 21% longer, (?!()) is 16%, and ($^) 6% longer. May be significant in some cases, t...
Invoke a callback at the end of a transition
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Now, in d3 v4.0, there is a facility for explicitly attaching event handlers to transitions:
https://github.com/d3/d3-transition#transition_on
To execute code when a transition has completed, all you need is:
d3.select("#m...
Replacing all non-alphanumeric characters with empty strings
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@William -- it's unfortunate that PHP is now getting credit for PCRE
– Thomas Dignan
Feb 11 '13 at 3:10
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How to assign name for a screen? [closed]
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Much appreciated. Even though I know you can start with a name, I often start without naming, then wish I could later. Thanks!
– Ketzak
Jul 31 '17 at 18:40
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What's the point of 'const' in the Haskell Prelude?
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Blog link in the answer is dead. It should now point here: brandon.si/code/…
– nsxt
Jul 11 '15 at 3:46
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python multithreading wait till all threads finished
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okay, i see. now i understand, was a bit confused about it but i think i understand, join sort of attaches the current process to the thread and waits till its done, and if t2 finishs before t1 then when t1 is done it will check for t2 be...
Finding all possible permutations of a given string in python
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@pst: Hmm I'd tend to disagree. I know in Ada or Pascal that a cast is just a new type-view on the same bits. However at least from a C perspective, casting is an appropriate term whether or not you're changing the underlying structure of the data. It simply r...
Smart way to truncate long strings
...px/15px verdana, arial;
margin: 2rem;
}
.truncate {
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
width: 30vw;
}
.truncate:before{
content: attr(data-longstring);
}
.truncate:hover::before {
content: attr(data-longstring);
width: auto;
height:...