Question

如何按键排序为整数？

我有以下对象;

 $scope.data = {
    "0": { data: "ZERO" },
    "1": { data: "ONE" },
    "2": { data: "TWO"  },
    "3": { data: "TREE" },
    "5": { data: "FIVE" },
    "6": { data: "SIX" },
    "10":{ data:  "TEN" },
    "11": { data: "ELEVEN" },
    "12": { data: "TWELVE" },
    "13": { data: "THIRTEEN" },
    "20": { data: "TWENTY"}
 }

HTML：

<div ng-repeat="(key,value) in data">

当前的输出订单为1,10,11,12,13,14,2,20,3,4,5,6

但我想要1,2,3,4,5,6,10,11,12,13,14,20

| orderBy:key

不适合我。

有什么想法吗？

谢谢！

Answer 1

选项将使用中间过滤器。

PLUNK AND代码段

var app = angular.module('app', []);

app.controller('MainCtrl', function($scope) {
  
  $scope.template = {
    "0": { data: "ZERO" },
    "1": { data: "ONE" },
    "2": { data: "TWO"  },
    "3": { data: "TREE" },
    "5": { data: "FIVE" },
    "6": { data: "SIX" },
    "10":{ data:  "TEN" },
    "11": { data: "ELEVEN" },
    "12": { data: "TWELVE" },
    "13": { data: "THIRTEEN" },
    "20": { data: "TWENTY"}
  }
 
});

app.filter('toArray', function() { return function(obj) {
    if (!(obj instanceof Object)) return obj;
    return _.map(obj, function(val, key) {
        return Object.defineProperty(val, '$key', {__proto__: null, value: key});
    });
}});

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.7.0/underscore.js"></script>

<body ng-app="app" ng-controller="MainCtrl">
    <div ng-repeat="(key, value) in template| toArray | orderBy:key">{{key}} : {{value.$key}} : {{value.data}}</div>
<body>

注意：

上面的过滤器需要Underscore.js，如果你不使用它，可以重写过滤器。

Answer 2

我认为通过转换为数组可以自行解决问题。双关语。

var obj = {"3": {three:3}, 2: {two:2}, "5": {five:5}, 4: {four:4}, 
  1: {one:1}, 6: {six:6}, 10: {ten:10}, 11:{eleven:11} 
} 

$scope.arr = [];

for (var o in obj)
   $scope.arr.push(obj[o])

Answer 3

app.filter('orderObjectBy', [function()  {
  return (filterObj, prop) => {

    let arr = []
   //below is the loadash function you can use for in also
   _.forEach(filterObj, function(value, key)  {
   arr.push({
   key: key,
    value: value
     });
  });

let sortedArr = _.sortBy(arr, val => val.value[prop]);

  for (let variableKey in filterObj) {
 if (filterObj.hasOwnProperty(variableKey)) {
  delete filterObj[variableKey];
    }
   }

  for (let data of sortedArr) {
 filterObj[data.key] = data.value;
 }


  return filterObj;

   }
 }])

在ng-repeat中按对象键排序

3 个答案:

PLUNK AND代码段

注意：