queuable | Free Cron and Background Jobs for Heroku | Platform As A Service library
kandi X-RAY | queuable Summary
kandi X-RAY | queuable Summary
Free Background Processing (compared to Heroku and Slicehost).
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Top functions reviewed by kandi - BETA
- post processing
- get data from the queue
- Entry point for the WSGI application .
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QUESTION
I have discovered some behavior, that seems quite strange, to my understanding, how jQuery.css() works. I know, it is not queuable, but in the fiddle below, when I apply 2 css method in succession - but not in one queue, it behaves differently, that applying them with 1ms delay by setTimeout.
The result is, that one box fades in, but the other goes immediately to opacity 1.
Can somebody clarify please.
...ANSWER
Answered 2018-Jun-05 at 18:20The browser's layout engine cannot differentiate between the beginning state and end state of your element because, in its eyes, both the beginning state (opacity: 0
) and end state (opacity: 1
) were set at the same time.
In order for the layout engine to understand that there should be separation, you'll need to cause an interruption between the beginning and end. Unfortunately, as far as I'm aware, there isn't a legitimate or "nice" way to do this, so you need to utilize a workaround.
setTimeout
is one way to force a separation, which is why your first example works.
(This method is commonly misunderstood, so I feel it important to clarify that this does not work because you're "giving the browser time", but rather because setTimeout
creates a queued callback. This callback is then executed separately, bypassing the initial issue of setting both states at the same time.)
See the example below, where I set the timeout to 0
and still get a proper transition:
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