UIkit - how to get order with the sortable component?

问题

I implemented the UIkit sortable component and added a stop event. But I can't figure out how to calculate the new order if an item has been dragged. So far the only thing I can think of is giving each item an id then calculating based upon that id, but it doesn't seem like the proper way to do so

回答1:

There is a quite simple way of achieving this. The element stores originalEvent where you can find also explicitOriginalTarget - our moved element. As it is wrapped in li inside ul, I went up to its parentNode (li), so I am at the level of elements I need, then converted it to jQuery object (you don't have to, I did it just because it was quick), then you can get its index. All of these values can be accessed by console.log(e);

Only problem with this solution is performance, it works, but when you move elements too often, it can show 0 instead of correct index value

EDIT: I realized you're probably asking about the whole set of items and their order, not only the index of currently moved item, so I added also console logging for this as well

Example below:

var indexes = new Array();

$(document).on('moved', '.uk-sortable', function(e) {
  var currentLi = e.originalEvent.explicitOriginalTarget.parentNode;
  indexes = [];
  $(this).find('li').each(function() {
    indexes.push($(this).data("index"));
  });
  alert("New position: " + $(currentLi).index());
  console.log(indexes);
});

$('.uk-sortable').find('li').each(function(i) {
  $(this).data("index", i);
  indexes.push(i);
});
console.log(indexes);

<!-- UIkit CSS -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/uikit/3.0.0-beta.35/css/uikit.min.css" />

<!-- UIkit JS -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/uikit/3.0.0-beta.35/js/uikit.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/uikit/3.0.0-beta.35/js/uikit-icons.min.js"></script>
<ul class="uk-grid-small uk-child-width-1-4 uk-text-center" uk-sortable="handle: .uk-card" uk-grid>
    <li>
        <div class="uk-card uk-card-default uk-card-body">Item 1</div>
    </li>
    <li>
        <div class="uk-card uk-card-default uk-card-body">Item 2</div>
    </li>
    <li>
        <div class="uk-card uk-card-default uk-card-body">Item 3</div>
    </li>
    <li>
        <div class="uk-card uk-card-default uk-card-body">Item 4</div>
    </li>
    <li>
        <div class="uk-card uk-card-default uk-card-body">Item 5</div>
    </li>
    <li>
        <div class="uk-card uk-card-default uk-card-body">Item 6</div>
    </li>
    <li>
        <div class="uk-card uk-card-default uk-card-body">Item 7</div>
    </li>
    <li>
        <div class="uk-card uk-card-default uk-card-body">Item 8</div>
    </li>
</ul>

来源：https://stackoverflow.com/questions/47549648/uikit-how-to-get-order-with-the-sortable-component

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