What to do if jquery data doesn't work

Solution to jquery data not working: 1. Open the corresponding code file; 2. Use the "dom.attr('data-hour')" statement, that is, the attr() method to get the attribute value That’s it.

The operating environment of this article: Windows7 system, jquery3.2.1, Dell G3 computer.

What should I do if jquery data doesn’t work?

About jQuery's .data() method, it doesn't seem to work after reassignment

I recently used jquery's data method to make a countdown, which is probably like this:

<div data-hour="1" data-minute="0" data-second="0">01:00:00</div>

1) At the beginning, we used the time stored in data, dom.data()

2) Reassign data every second, dom.attr({'data -hour':hour,'data-minute':minute,'data-second':second});

3) Pause

4) Start again, repeat 1) , and then found that the countdown from 1:00:00 started again.

We don’t know why yet, but it has been changed: 1) In 1), use dom.attr('data-hour'), ​​attr() method to get the attribute value

If you know Why, can you tell me, thank you~

Recommended study: "jquery video tutorial"

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