基于AngularJS拖拽插件ngDraggable.js实现拖拽排序功能

程序员文章站 2022-03-07 09:40:49

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;...

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：

效果图如下：

<!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>

基于AngularJS拖拽插件ngDraggable.js实现拖拽排序功能

总结

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