Javascript 如何 JSON.stringify 对象数组
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How to JSON.stringify an array of objects
提问by crmepham
I am attempting to JSON.stringify()the following key/value pair, where the value is an array of objects.
我正在尝试JSON.stringify()以下键/值对，其中值是一个对象数组。
var string = JSON.stringify({onlineUsers : getUsersInRoom(users, room)});
This is incorrect and gives the following error:
这是不正确的，并给出以下错误：
var string = JSON.stringify({onlineUsers : getUsersInRoom(users, room)});
^TypeError: Converting circular structure to JSON
var string = JSON.stringify({onlineUsers : getUsersInRoom(users, room)});
^类型错误：将圆形结构转换为 JSON
This is the method:
这是方法：
function getUsersInRoom(users, room) {
var json = [];
for (var i = 0; i < users.length; i++) {
if (users[i].room === room) {
json.push(users[i]);
}
}
return json;
}
Added usersdata structure:
添加users数据结构：
[
{
id:1,
username:"",
room:"room 1",
client: {
sessionId:1,
key:value
}
},
{
// etc
}
]
Added function to add user to users array.
添加了将用户添加到用户数组的功能。
function addUser(client) {
clients.push(client);
var i = clients.indexOf(client);
if (i > -1) {
users.push({
id : i,
username : "",
room : "",
client : clients[i]
});
}
}
Added screen capture of JavaScript array containing an object as well as key/value pairs inside an object.
添加了包含对象以及对象内的键/值对的 JavaScript 数组的屏幕截图。
Added screen capture of the clients array containing WebSocket objects.
添加了包含 WebSocket 对象的客户端数组的屏幕截图。
How do I correctly "stringify" {key: arrayOfObjects[{key:value,key:{}},{},{}]}?
我如何正确地“字符串化” {key: arrayOfObjects[{key:value,key:{}},{},{}]}？
采纳答案by Shaun Sharples
var data = { };
data.onlineUsers = getUsersInRoom();
var string = JSON.stringify(data);
Would this work for you?
这对你有用吗？
edit
编辑
I just noticed your error is circular type, your user or room object is probably creating a circular reference.
我刚刚注意到您的错误是循环类型，您的用户或房间对象可能正在创建循环引用。
User > Room > User > Room etc...
用户 > 房间 > 用户 > 房间等...
