深究AngularJS—

先看看代码吧：
//按时间排序

<html><head><meta charset="utf-8"><script src="//apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script></head><body><div ng-app="myApp" ng-controller="myCtrl"><div ng-repeat="itemList in lists | orderBy :'time':true  track by $index "><span>{{itemList.time}}</span>------<span ng-repeat="item in itemList.data track by $index">{{$index==0?item+'%':item}}-</span></div></div><script>var app = angular.module('myApp', []);app.controller('myCtrl', function($scope) {$scope.lists = [{"time":"2016-04-11","data":["29.07","50439","50439","1170","22544","21245","912"]},{"time":"2016-04-12","data":["55.15","87668","74705","2222","38019","35530","1671"]},{"time":"2016-04-13","data":["31.73","50720","44320","1175","23042","21743","893"]}]});</script></body></html>    1    
2    
3    
4    
5    
6    
7    
8    
9    
10    
11    
12    
13    
14    
15    
16    
17    
18    
19    
20    
21
    1    
2    
3    
4    
5    
6    
7    
8    
9    
10    
11    
12    
13    
14    
15    
16    
17    
18    
19    
20    
21

结果：

2016-04-13------ 31.73%-50720-44320-1175-23042-21743-893-2016-04-12------ 55.15%-87668-74705-2222-38019-35530-1671-2016-04-11------ 29.07%-50439-50439-1170-22544-21245-912-    1    
2    
3
    1    
2    
3

本来正常排序按照AngularJS的文档讲解那样加个过滤器就行，但这里为什么加了track by $index，这是因为angularjs里不允许遍历里的数组里有相同的结果。如果不加，则结果里的第三条数据因为50439是相同的，则不会显示了。不加效果如下：

2016-04-13------ 31.73%-50720-44320-1175-23042-21743-893-2016-04-12------ 29%-87668-74705-2222-38019-35530-1671-2016-04-11------    1    
2    
3
    1    
2    
3

本站仅提供存储服务，所有内容均由用户发布，如发现有害或侵权内容，请点击举报。