Question

我是JavaScript Tree Views和Angular的新手。我在网上搜索了这个主题，但却无法轻易找到我的问题的答案我需要一个树形视图，它可以很好地处理Angular，并且可以处理更大的数据集（数万个节点），这允许我使用拖放操作在树中移动节点以及插入和删除节点。

Answer 1

我谷歌它，我发现这尝试这个，但在实现它之前得到基本的js和角度

Simple List Demo

Nested List demo

HTML

    <!-- The dnd-list directive allows to drop elements into it.
     The dropped data will be added to the referenced list -->
<ul dnd-list="list">
    <!-- The dnd-draggable directive makes an element draggable and will
         transfer the object that was assigned to it. If an element was
         dragged away, you have to remove it from the original list
         yourself using the dnd-moved attribute -->
    <li ng-repeat="item in list"
        dnd-draggable="item"
        dnd-moved="list.splice($index, 1)"
        dnd-effect-allowed="move"
        dnd-selected="models.selected = item"
        ng-class="{'selected': models.selected === item}"
        >
        {{item.label}}
    </li>
</ul>

CSS

/**
 * The dnd-list should always have a min-height,
 * otherwise you can't drop to it once it's empty
 */
.simpleDemo ul[dnd-list] {
    min-height: 42px;
    padding-left: 0px;
}

/**
 * The dndDraggingSource class will be applied to
 * the source element of a drag operation. It makes
 * sense to hide it to give the user the feeling
 * that he's actually moving it.
 */
.simpleDemo ul[dnd-list] .dndDraggingSource {
    display: none;
}

/**
 * An element with .dndPlaceholder class will be
 * added to the dnd-list while the user is dragging
 * over it.
 */
.simpleDemo ul[dnd-list] .dndPlaceholder {
    background-color: #ddd;
    display: block;
    min-height: 42px;
}

.simpleDemo ul[dnd-list] li {
    background-color: #fff;
    border: 1px solid #ddd;
    border-top-right-radius: 4px;
    border-top-left-radius: 4px;
    display: block;
    padding: 10px 15px;
    margin-bottom: -1px;
}

/**
 * Show selected elements in green
 */
.simpleDemo ul[dnd-list] li.selected {
    background-color: #dff0d8;
    color: #3c763d;
}

角

angular.module("demo").controller("SimpleDemoController", function($scope) {

    $scope.models = {
        selected: null,
        lists: {"A": [], "B": []}
    };

    // Generate initial model
    for (var i = 1; i <= 3; ++i) {
        $scope.models.lists.A.push({label: "Item A" + i});
        $scope.models.lists.B.push({label: "Item B" + i});
    }

    // Model to JSON for demo purpose
    $scope.$watch('models', function(model) {
        $scope.modelAsJson = angular.toJson(model, true);
    }, true);

});

角度JavaScript树视图，通过拖放重新排列节点/插入节点

1 个答案: