在JSON结果中定义函数是否有效? [英] Is it valid to define functions in JSON results?

问题描述

网站的JSON响应的一部分对此具有...(为上下文添加...)

Part of a website's JSON response had this (... added for context):

{..., now:function(){return(new Date).getTime()}, ...}

向JSON添加匿名函数是否有效?我希望每次您访问时间"都会返回不同的值.

Is adding anonymous functions to JSON valid? I would expect each time you access 'time' to return a different value.

推荐答案

否.

JSON纯粹是一种数据描述语言.如 http://www.json.org 所述，它是轻量级数据交换格式". -不是编程语言.

JSON is purely meant to be a data description language. As noted on http://www.json.org, it is a "lightweight data-interchange format." - not a programming language.

根据 http://en.wikipedia.org/wiki/JSON ，基本支持的类型:

Per http://en.wikipedia.org/wiki/JSON, the "basic types" supported are:

• 数字(整数，实数或浮点数 点)
• 字符串(双引号Unicode 带有反斜线转义)
• 布尔值 (对与错)
• 数组(有序 值序列，以逗号分隔 并放在方括号中)
• 对象(键:值的集合 对，以逗号分隔并包含在内 花括号中的)
• null

• Number (integer, real, or floating point)
• String (double-quoted Unicode with backslash escaping)
• Boolean (true and false)
• Array (an ordered sequence of values, comma-separated and enclosed in square brackets)
• Object (collection of key:value pairs, comma-separated and enclosed in curly braces)
• null

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