[英]How to modify json object in array of object
我有一个对象数组
// This is should be taken from database
$scope.users = [{"$id":"1","UserID":3,"Name":"A","Selected":false},{"$id":"2","UserID":4,"Name":"B","Selected":false},{"$id":"3","UserID":5,"Name":"C","Selected":false},{"$id":"4","UserID":6,"Name":"D","Selected":false}]
然后有一个数组,其中包含从上一屏幕中选择的用户
$scope.usersSelected = [{"$id":"3","UserID":5,"Name":"C","Selected":true,"$$hashKey":"object:83"},{"$id":"4","UserID":6,"Name":"D","Selected":true,"$$hashKey":"object:84"}]
我想更新Selected
的特性$scope.users
,如果他们被发现在$scope.usersSelected
。 所以我遍历$scope.usersSelected
然后搜索其UserID
在UserID
的$scope.users
for (var i = 0; i < $scope.usersSelected.length; i++) {
var obj = $.grep($scope.users, function (e) { return e.UserID == $scope.usersSelected[i].UserID; });
obj.Selected = true;
}
但是Selected
属性不会更新。 上面的代码有什么问题?
其次,我需要对上面数组中的数据进行解释,为什么从数据库中填充数据时总是出现"$id"
,而从另一个屏幕中获取数据时为什么总是出现"$$hashKey"
? 这些价值从何而来?
注意:我将AngularJS与ASP.NET Web API 2结合使用,以从数据库中获取数据。
经过测试工作正常
$scope.users = [ {
"$id" : "1",
"UserID" : 3,
"Name" : "A",
"Selected" : false
}, {
"$id" : "2",
"UserID" : 4,
"Name" : "B",
"Selected" : false
}, {
"$id" : "3",
"UserID" : 5,
"Name" : "C",
"Selected" : false
}, {
"$id" : "4",
"UserID" : 6,
"Name" : "D",
"Selected" : false
} ];
$scope.usersSelected = [ {
"$id" : "3",
"UserID" : 5,
"Name" : "C",
"Selected" : true,
"$$hashKey" : "object:83"
}, {
"$id" : "4",
"UserID" : 6,
"Name" : "D",
"Selected" : true,
"$$hashKey" : "object:84"
} ]
var users = $scope.users;
var usersSelected = $scope.usersSelected;
for (var i = 0; i < users.length; i++) {
for (var j = 0; j < usersSelected.length; j++) {
debugger
if (users[i].UserID == usersSelected[j].UserID) {
console.log(users[i].UserID)
console.log(usersSelected[j].UserID)
users[i].Selected = true;
}
}
}
console.log(users)
console.log(usersSelected);
用javascript测试。
usersSelected = $scope.usersSelected;
users = $scope.users;
for (var i=0;i<users.length;i++){
if (usersSelected.some(function(e) e.UserID == users[i].UserID)) {
users[i].Selected = true;
console.dir(users[i]);
}
}
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