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,$event拖拽元素事件对象
- ng-drag-data:拖拽数据
官方链接：https://github.com/fatlinesofcode/ngDraggable
在拖拽进行元素排序时，只需动态更改下循环数组元素顺序；具体事件绑定drop绑定在父元素，drag绑定在子元素即可，具体实现代码如下：
1 <!DOCTYPE html>
2 <html lang="en">
3
4 <head>
5 <meta charset="UTF-8">
6 <meta name="viewport" content="width=device-width, initial-scale=1.0">
7 <meta http-equiv="X-UA-Compatible" content="ie=edge">
8 <style>
9 .drag-container {
10 display: flex;
11 justify-content: flex-start;
12 align-items: center;
13 }
14
15 .drag-container .drag-box {
16 display: flex;
17 align-items: center;
18 justify-content: center;
19 width: 200px;
20 height: 200px;
21 margin: 20px;
22 color: #fff;
23 font-size: 20px;
24 font-weight: bold;
25 }
26
27 .drag-container .drag-box .drag-item {
28 display: flex;
29 align-items: center;
30 justify-content: center;
31 width: 150px;
32 height: 150px;
33 }
34 </style>
35 <title>ng-dragger</title>
36 </head>
37
38 <body ng-app="app" ng-controller="draggerController">
39 <div class="drag-container">
40 <div ng-repeat="item in dragArr" class="drag-box" ng-drop="true" ng-drop-success="onDropComplete($index, $data, $event)">
41 <div class="drag-item" ng-drag="true" ng-drag-data="{{item}}" ng-style="{background: item.color}">{{item.text}}</div>
42 </div>
43 </div>
44
45 <script src="https://cdn.bootcss.com/angular.js/1.3.1/angular.js"></script>
46 <script src="https://cdn.bootcss.com/ngDraggable/0.1.11/ngDraggable.js"></script>
47 <script>
48 var myApp = angular.module(‘app‘, [‘ngDraggable‘]);
49 myApp.controller(‘draggerController‘, function($scope) {
50 $scope.dragArr = [{
51 text: ‘方块1‘,
52 color: ‘green‘,
53 key: ‘arr1‘
54 }, {
55 text: ‘方块2‘,
56 color: ‘blue‘,
57 key: ‘arr1‘
58 }, {
59 text: ‘方块3‘,
60 color: ‘#888‘,
61 key: ‘arr1‘
62 }, {
63 text: ‘方块4‘,
64 color: ‘#888‘,
65 key: ‘arr2‘
66 }, {
67 text: ‘方块5‘,
68 color: ‘#888‘,
69 key: ‘arr2‘
70 }, {
71 text: ‘方块6‘,
72 color: ‘#888‘,
73 key: ‘arr2‘
74 }];
75
76 $scope.onDropComplete = function(index, obj, $event) {
77 var otherObj = $scope.dragArr[index];
78 var otherIndex = $scope.dragArr.findIndex(vv => Object.is(vv.text, obj.text));
79 if (otherObj.key !== obj.key) return;
80 $scope.dragArr[index] = obj;
81 $scope.dragArr[otherIndex] = otherObj;
82 }
83
84 })
85 </script>
86 </body>
87
88 </html>
效果图如下：
原文地址：https://www.cnblogs.com/gerry2019/p/10640911.html
时间： 2024-07-30 15:27:39