JavaScript内部对象键，带有空格的字符串。？(JavaScript inner object key with a string having space .? [duplicate])

JavaScript内部对象键，带有空格的字符串。？(JavaScript inner object key with a string having space .? [duplicate])

这个问题在这里已有答案：

如何访问包含特殊字符的对象属性？ 1个答案 访问/处理（嵌套）对象，数组或JSON 19答案

我有一个以下格式的json对象，我试图检索关键“ krishna kk ”的等级 ，这给了我一个Uncaught SyntaxError: Unexpected token [ error。 任何人都可以帮助理解如何获取键名在其中有空格的内部对象数据。

[ {"studentinfo": [ { "rama nathan": { "grade": "1", "roleno": "9", "score": 9 } }, { "krishna kk": { "grade": "3", "roleno": "9", "score": 4 } }, { "john Doe": { "grade": "2", "roleno": "5", "score": 7 } } ], } ]

我的代码如下：

var stugrade = studentobject["0"].studentinfo["0"].[rama nathan].grade;

This question already has an answer here:

How to access object properties containing special characters? 1 answer How can I access and process nested objects, arrays or JSON? 21 answers

I have a json object in the below format and am trying to retrive the grade for the key "krishna kk" which gives me an Uncaught SyntaxError: Unexpected token [ error. can any one help to understand how to get the inner object data where the key name has spaces in it.

[ {"studentinfo": [ { "rama nathan": { "grade": "1", "roleno": "9", "score": 9 } }, { "krishna kk": { "grade": "3", "roleno": "9", "score": 4 } }, { "john Doe": { "grade": "2", "roleno": "5", "score": 7 } } ], } ]

My code as below :

var stugrade = studentobject["0"].studentinfo["0"].[rama nathan].grade;

最满意答案

你可以像这样执行它

var stugrade = studentobject[0].studentinfo[0]['rama nathan']['grade'];

You can execute it like this

var stugrade = studentobject[0].studentinfo[0]['rama nathan']['grade'];