如何使用`AngularJS`將鍵值對轉換為數組列表？
[英]How to convert key-value pairs to list of array using `AngularJS`?
問題描述
這是我們的數據：
$scope.arr = {
"1": "A",
"2": "B",
"3": "C",
"4": "D",
"5": "E",
"6": "F",
"7": "Others",
"fromDate": {
"$date": "2015-02-13T20:59:28.947Z"
}
}
如何將此數據轉換為列表/數組格式？
我期待這樣的事情：（順便說一句，我也想刪除fromDate ）
$scope.formattedArr = [
{value: "1",name: "A" },
{value: "2",name: "B" },
{value: "3",name: "C" },
{value: "4",name: "D" },
{value: "5",name: "E" },
{value: "6",name: "F" },
{value: "7",name: "Others" }
]
4 個解決方案
解決方案1
2 已采納 2017-01-29 10:44:30
angular.module('app',[]) .controller('ctrl',function($scope){ $scope.arr = { "1": "A", "2": "B", "3": "C", "4": "D", "5": "E", "6": "F", "7": "Others", "fromDate": { "$date": "2015-02-13T20:59:28.947Z" } } $scope.aarr = []; for (key in $scope.arr){ $scope.aarr.push({'value' : key , 'name' : $scope.arr[key] }) } console.log($scope.aarr) })
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script> <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.14/angular.min.js"></script> <div ng-app="app" ng-controller="ctrl">{{aarr}}</div>
解決方案2
2 2017-01-29 11:02:24
welp，這是Angular，所以... angular.forEach（）。
$scope.arr = {
"1": "A",
"2": "B",
"3": "C",
"4": "D",
"5": "E",
"6": "F",
"7": "Others",
"fromDate": {
"$date": "2015-02-13T20:59:28.947Z"
}
}
$scope.formattedArr = [];
angular.forEach($scope.arr, function(value, key) {
if ( key !== 'fromDate' ) {
this.push({value: key, name: value});
}
}, $scope.formattedArr);
expect($scope.formattedArr).toEqual([
{value: "1",name: "A" },
{value: "2",name: "B" },
{value: "3",name: "C" },
{value: "4",name: "D" },
{value: "5",name: "E" },
{value: "6",name: "F" },
{value: "7",name: "Others" }
]);
Lemme嘗試將其放在代碼段中：
(function(angular) { 'use strict'; angular.module('myapp', []).controller('MainCtrl', function MainCtrl() { this.arr = { "1": "A", "2": "B", "3": "C", "4": "D", "5": "E", "6": "F", "7": "Others", "fromDate": { "$date": "2015-02-13T20:59:28.947Z" } }; this.formattedArr = []; angular.forEach(this.arr, function(value, key) { if( key !== 'fromDate') { this.push({value: key, name: value}); } }, this.formattedArr); }); })(window.angular);
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Example - example-heroComponentSimple-production</title> <script src="//code.angularjs.org/snapshot/angular.min.js"></script> </head> <body ng-app="myapp"> <div ng-controller="MainCtrl as vm"> <b>Very basic AngularJs component example</b><br><br> <div><b>Before</b></div> <pre>arr = {{vm.arr | json}}</pre> <div><b>After</b></div> <pre>formattedArr = {{vm.formattedArr | json}}</pre> </div> </body> </html>
解決方案3
1 2017-01-29 10:35:39
您可以使用for in循環來訪問對象鍵和值
for (var key in $scope.arr) {
if ($scope.arr.hasOwnProperty(key) && typeof $scope.arr[key] === 'string') {
$scope.formattedArr.push({
value: key,
name: $scope.arr[key]
});
}
};
解決方案4
1 2017-01-29 10:48:40
您可以使用map()函數，請參見以下代碼段
var $scope = {}; $scope.arr = { "1": "A", "2": "B", "3": "C", "4": "D", "5": "E", "6": "F", "7": "Others", "fromDate": { "$date": "2015-02-13T20:59:28.947Z" } } $scope.list = Object.keys($scope.arr).map(function(el, index) { if (el != "fromDate") return { value: index + 1, name : $scope.arr[el] }; }); console.log($scope.list);
基於鍵值對數組的AngularJS格式化數據
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