Question

我的服务器端mongoose代码中有几个命令，但我不知道为什么我无法在服务器端向此数据对象添加更多属性，而我可以在chrome控制台没有任何问题

var data = {};
        data = noteData;
        data.uploader = req.user.username;
        console.log(data.uploader);
        console.log(req.user.username);
        data.actualFileName = actualFileName;
        console.log(data.actualFileName);
        console.log(actualFileName);
        data.storedFileName = storedFileName;
        console.log(data.storedFileName);
        console.log(req.storedFileName);
        console.log(data);

noteData具有以下值 -

{"title":"1","subject":"2","author":"3","department":"CSE","college":"MSRIT","description":"45","details":"5","tags":["6"]}

以上代码片段的控制台输出是 -

undefined
harshitladdha93@gmail.com
undefined
[ 'EIPR.odt', 'EIPR.docx' ]
undefined
undefined
{"title":"1","subject":"2","author":"3","department":"CSE","college":"MSRIT","description":"45","details":"5","tags":["6"]}

我还应该尝试调试此错误或我应该提供哪些其他信息？

Answer 1

当你说data = noteData时 - 它现在是与noteData相同的类型...所以如果noteData.property不存在，则数据的属性将不存在。

Answer 2

尝试使用此方法，如果它不起作用，请向我们展示您的猫鼬代码。

var data = {};
data = noteData;

data['uploader'] = 'USER_NAME';
console.log(data.uploader);
data['actualFileName'] = 'FILE_NAME';
console.log(data.actualFileName);
data['toredFileName'] = 'STORE_FILENAME';
console.log(data.storedFileName);
console.log(data);

Object {title: "1", subject: "2", author: "3", department: "CSE", college: "MSRIT"…}
actualFileName: "FILE_NAME"
author: "3"
college: "MSRIT"
department: "CSE"
description: "45"
details: "5"
subject: "2"
tags: Array[1]
title: "1"
toredFileName: "STORE_FILENAME"
uploader: "USER_NAME"
__proto__: Object

Javascript对象属性未添加

2 个答案: