如何在javascript @ [重复]中从JSON中检索数据答案

【问题标题】：how to retrive data from JSON in javascript @ [duplicate]如何在javascript @ [重复]中从JSON中检索数据
【发布时间】：2022-01-09 07:16:16
【问题描述】：

let data = {
  
  "@type": "Movie",
  "url": "/title/tt0443272/",
  "name": "Lincoln",
  "image": "https://m.media-amazon.com/images/M/MV5BMTQzNzczMDUyNV5BMl5BanBnXkFtZTcwNjM2ODEzOA@@._V1_.jpg",
  "description": "As the American Civil War continues to rage, America&apos;s president struggles with continuing carnage on the battlefield as he fights with many inside his own cabinet on the decision to emancipate the slaves.",
   
 
 
  
  "duration": "PT2H30M"
}


console.log(data.@type)

我有来自 scrping 的大量 json 数据，但我不知道如何获取其数据的价值键从“@”开始

我如何获得@type 的值

当我使用这种方法时，我得到了错误：-

SyntaxError: 无效或意外的令牌

【问题讨论】：

试试data["@type"]

标签： javascript json

【解决方案1】：

只要console.log(data['@type'])

let data = {
  "@type": "Movie",
  "url": "/title/tt0443272/",
  "name": "Lincoln",
  "image": "https://m.media-amazon.com/images/M/MV5BMTQzNzczMDUyNV5BMl5BanBnXkFtZTcwNjM2ODEzOA@@._V1_.jpg",
  "description": "As the American Civil War continues to rage, America&apos;s president struggles with continuing carnage on the battlefield as he fights with many inside his own cabinet on the decision to emancipate the slaves.",
  "duration": "PT2H30M"
}


console.log(data['@type'])

【讨论】：

这是我 TNX 的工作：)

【解决方案2】：

您也可以使用Bracket notation 访问变量属性，例如它的键 -> 值：

let data = {

    "@type": "Movie",
    "url": "/title/tt0443272/",
    "name": "Lincoln",
    "image": "https://m.media-amazon.com/images/M/MV5BMTQzNzczMDUyNV5BMl5BanBnXkFtZTcwNjM2ODEzOA@@._V1_.jpg",
    "description": "As the American Civil War continues to rage, America&apos;s president struggles with continuing carnage on the battlefield as he fights with many inside his own cabinet on the decision to emancipate the slaves.",

    "duration": "PT2H30M"
}


console.log(data["@type"])

【讨论】：

【解决方案3】：

JavaScript 中的变量只能以字母、美元符号或下划线开头。

当使用无效的变量名时，不能使用点表示法，必须使用方括号表示法

无效

data.@type

正确

data['@type']

【讨论】：