ngDraggable.js_AngularJS之拖拽排序

更新日期: 2019-04-02阅读: 2.8k标签: 拖拽分享

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ngDraggable.js是一款比较简单实用的angularJS拖拽插件，借助于封装好的一些自定义指令，能够快速的进行一些拖拽应用开发。首先先介绍一些基本的概念;

ng-drop:是否允许放入拖拽元素
ng-drop-success($data, $event):拖拽元素放入的回调;$data：放入元素数据；$event拖拽事件对象
ng-drag:元素是否允许拖拽
ng-drag-success($data, $event):$data:拖拽元素数据,$event拖拽元素事件对象
ng-drag-data:拖拽数据

官方链接：https://github.com/fatlinesofcode/ngDraggable

在拖拽进行元素排序时，只需动态更改下循环数组元素顺序；具体事件绑定drop绑定在父元素，drag绑定在子元素即可，具体实现代码如下：

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <style>
        .drag-container {
            display: flex;
            justify-content: flex-start;
            align-items: center;
        }
        
        .drag-container .drag-box {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 200px;
            height: 200px;
            margin: 20px;
            color: #fff;
            font-size: 20px;
            font-weight: bold;
        }
        
        .drag-container .drag-box .drag-item {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 150px;
            height: 150px;
        }
    </style>
    <title>ng-dragger</title>
</head>

<body ng-app="app" ng-controller="draggerController">
    <div class="drag-container">
        <div ng-repeat="item in dragArr" class="drag-box" ng-drop="true" ng-drop-success="onDropComplete($index, $data, $event)">
            <div class="drag-item" ng-drag="true" ng-drag-data="{{item}}" ng-style="{background: item.color}">{{item.text}}</div>
        </div>
    </div>

    <script src="https://cdn.bootcss.com/angular.js/1.3.1/angular.js"></script>
    <script src="https://cdn.bootcss.com/ngDraggable/0.1.11/ngDraggable.js"></script>
    <script>
        var myApp = angular.module('app', ['ngDraggable']);
        myApp.controller('draggerController', function($scope) {
            $scope.dragArr = [{
                text: '方块1',
                color: 'green',
                key: 'arr1'
            }, {
                text: '方块2',
                color: 'blue',
                key: 'arr1'
            }, {
                text: '方块3',
                color: '#888',
                key: 'arr1'
            }, {
                text: '方块4',
                color: '#888',
                key: 'arr2'
            }, {
                text: '方块5',
                color: '#888',
                key: 'arr2'
            }, {
                text: '方块6',
                color: '#888',
                key: 'arr2'
            }];

            $scope.onDropComplete = function(index, obj, $event) {
                var otherObj = $scope.dragArr[index];
                var otherIndex = $scope.dragArr.findIndex(vv => Object.is(vv.text, obj.text));
                if (otherObj.key !== obj.key) return;
                $scope.dragArr[index] = obj;
                $scope.dragArr[otherIndex] = otherObj;
            }

        })
    </script>
</body>

</html>

链接: https://fly63.com/article/detial/2663

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