javascript - 尝试在 Node.js 中遍历 JavaScript 数组？

Question

我有一个机器人系统，需要通过一系列用户来联系他们以了解即将发生的事件，并且在尝试递归访问此对象中的每个数组时遇到问题。

数组是

var users=bot.servers[bot.serverFromChannel(data['channelid'])].members;
console.log("wee"+util.inspect(users, {showHidden: false, depth: null}))
bot.sendMessage({
    to: data['channelid'],
    message: "Hello World",
}, function(response) { 
    console.log("Alright"+users.length)
    for (var i = 0, len = users.length; i < len; i++) {
        bot.editMessage({
            channel: data['channelid'],
            messageID: response.id,
            message: "Hello <@"+users[i].user.id+">"
        });
        console.log("wee"+util.inspect(users[i], {showHidden: false, depth: null}))
    };
    /*bot.deleteMessage({
        channel: data['channelid'],
        messageID: response.id
    });*/
});

到目前为止，它已经完成，发布了数组表并发布了“Hello World”，但停止在“好吧”，未定义。

数组表是这样的

{
    "domain": null,
    "_events": {},
    "_eventsCount": 6,
    "connected": true,
    "servers": {
        "923946464": {
            "voice_states": [],
            "roles": {
                "92394097364": {
                    "position": -1,
                    "permissions": 369089,
                    "name": "@everyone",
                    "managed": false,
                    "id": "92394464",
                    "hoist": false,
                    "color": 0
                }
            },
            "region": "us-east",
            "presences": [
            ],
            "owner_id": "9236892256",
            "name": "Group",
            "members": {
                "92368969305952256": {
                    "user": {
                        "username": "Nickoplier",
                        "id": "9256",
                        "discriminator": "6",
                        "avatar": "b37f9a293e509"
                    },
                    "roles": [],
                    "mute": false,
                    "joined_at": "2000-01-01T01:01:09.497000+00:00",
                    "deaf": false,
                    "status": "online",
                    "game_id": null
                },
            }
        }
    }
}

Answer 1

members 是一个对象，而不是数组。使用 Object.keys 获取键数组。

Object.keys(users).forEach(function(key) {
   var user = users[key];
   // Do stuff to user
});

如果您所在的环境不支持 Object.keys，请添加 es5-shim或使用以下内容:

for (var key in users) {
  if (users.hasOwnProperty(key)) {
    var user = users[key];
    // Do stuff to user
  }
}