如何在AngularJS中使用ng-repeat迭代键和值？-Java 学习之路

641

在我的控制器中，我有以下数据： $scope.object = data

现在这个数据是带有 json 的键和值的字典 .

我可以在模板中使用 object.name 访问该属性 . 有没有什么方法可以迭代键，并在表格中显示它们

<tr><td> {{key}} </td> <td> data.key </td>

数据是这样的

{
    "id": 2,
    "project": "wewe2012",
    "date": "2013-02-26",
    "description": "ewew",
    "eet_no": "ewew",
}

9 回答

-2

一个todo列表示例，它通过 ng-repeat 循环遍历对象：

var app = angular.module('toDolistApp', []);
app.controller('toDoListCntrl', function() {
  var self = this;
  self.toDoListItems = {};// []; //dont use square brackets if keys are string rather than numbers.
  self.doListCounter = 0;

  self.addToDoList = function() {		  		   
    var newToDoItem = {};
    newToDoItem.title     = self.toDoEntry;
    newToDoItem.completed = false;		   

    var keyIs = "key_" + self.doListCounter++;  		   

    self.toDoListItems[keyIs] = newToDoItem;		   
    self.toDoEntry = ""; //after adding the item make the input box blank.
  };
});

app.filter('propsCounter', function() {
  return function(input) {
    return Object.keys(input).length;
  }
});

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<body ng-app="toDolistApp">    
  <div ng-controller="toDoListCntrl as toDoListCntrlAs">
    Total Items: {{toDoListCntrlAs.toDoListItems | propsCounter}}

    Enter todo Item:  <input type="text" ng-model="toDoListCntrlAs.toDoEntry"/>
    <span>{{toDoListCntrlAs.toDoEntry}}</span>
    <button ng-click="toDoListCntrlAs.addToDoList()">Add Item</button> 

    <div ng-repeat="(key, prop) in toDoListCntrlAs.toDoListItems"> 
      <span>{{$index+1}} : {{key}}   : Title = {{ prop.title}} : Status = {{ prop.completed}} </span>
    </div>     
  </div>    
</body>

回复于 2024-05-03T20:42:14+08:00

Use below code it is working to display your key and value here is key start with 1:
         <tr ng-repeat="(key,value) in alert_list" >
                   <td>{{key +1}}</td>
                   <td>{{value.title}}</td>
                 </tr>
Below is document link for it.

https://docs.angularjs.org/api/ng/directive/ngRepeat

回复于 2024-05-03T20:42:14+08:00

3
怎么样：
```
<table>
  <tr ng-repeat="(key, value) in data">
    <td> {{key}} </td> <td> {{ value }} </td>
  </tr>
</table>
```
此方法列在文档中：https://docs.angularjs.org/api/ng/directive/ngRepeat
回复于 2024-05-03T20:42:14+08:00

1336

如果要使用双向绑定编辑属性值：

<tr ng-repeat="(key, value) in data">
    <td>{{key}}<input type="text" ng-model="data[key]"></td>
</tr>

回复于 2024-05-03T20:42:14+08:00

Complete example here:-

<!DOCTYPE html >
<html ng-app="dashboard">
<head>
<title>AngularJS</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<link rel="stylesheet" href="./bootstrap.min.css">
<script src="./bootstrap.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.4/angular.min.js"></script>
</head>
<body ng-controller="myController">
    <table border='1'>
        <tr ng-repeat="(key,val) in collValues">
            <td ng-if="!hasChildren(val)">{{key}}</td>  
            <td ng-if="val === 'string'">
                <input type="text" name="{{key}}"></input>
            </td>
            <td ng-if="val === 'number'">
                <input type="number" name="{{key}}"></input>
            </td>
            <td ng-if="hasChildren(val)" td colspan='2'>
                <table border='1' ng-repeat="arrVal in val">
                    <tr ng-repeat="(key,val) in arrVal">
                        <td>{{key}}</td>    
                        <td ng-if="val === 'string'">
                            <input type="text" name="{{key}}"></input>
                        </td>
                        <td ng-if="val === 'number'">
                            <input type="number" name="{{key}}"></input>
                        </td>
                    </tr>
                </table>                
            </td>

        </tr>       
    </table>
</body>

<script type="text/javascript">

    var app = angular.module("dashboard",[]);
    app.controller("myController",function($scope){
        $scope.collValues = {
            'name':'string',
            'id':'string',
            'phone':'number',
            'depart':[
                    {
                        'depart':'string',
                        'name':'string' 
                    }
            ]   
        };

        $scope.hasChildren = function(bigL1) {
            return angular.isArray(bigL1);
} 
    });
</script>
</html>

回复于 2024-05-03T20:42:14+08:00

我们可以按照以下步骤避免按字母顺序显示键值 .

Javascript

$scope.data = {
   "id": 2,
   "project": "wewe2012",
   "date": "2013-02-26",
   "description": "ewew",
   "eet_no": "ewew",
};
var array = [];
for(var key in $scope.data){
    var test = {};
    test[key]=$scope.data[key];
    array.push(test);
}
$scope.data = array;

HTML

<p ng-repeat="obj in data">
   <font ng-repeat="(key, value) in obj">
      {{key}} : {{value}}
   </font>
</p>

回复于 2024-05-03T20:42:14+08:00

124
我不认为有角度的内置函数可以做到这一点，但你可以通过创建一个包含所有 Headers 名称的单独范围属性来实现，你可以像这样自动填充这个属性：
```
var data = {
  foo: 'a',
  bar: 'b'
};

$scope.objectHeaders = [];

for ( property in data ) {
  $scope.objectHeaders.push(property); 
}

// Output: [ 'foo', 'bar' ]
```
回复于 2024-05-03T20:42:14+08:00

这是一个有效的例子：

<div class="item item-text-wrap" ng-repeat="(key,value) in form_list">
  <b>{{key}}</b> : {{value}}
</div>

编辑

回复于 2024-05-03T20:42:14+08:00

13
你可以在你的javascript（控制器）或你的html（角度视图）中做到这一点......

JS：
```
$scope.arr = [];
for ( p in data ) {
  $scope.arr.push(p); 
}
```
HTML：
```
<tr ng-repeat="(k, v) in data">
    <td>{{k}}<input type="text" ng-model="data[k]"></td>
</tr>
```
我相信html方式更有棱角，但你也可以在你的控制器中执行并在你的html中检索它...

查看Object键也不错，如果需要，它们会为您提供一系列键，更多信息请点击此处：

https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Object/keys
回复于 2024-05-03T20:42:14+08:00

如何在AngularJS中使用ng-repeat迭代键和值？

9 回答

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