JSON 键是否必须用引号括起来? [英] Do the JSON keys have to be surrounded by quotes?

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问题描述

示例:以下代码是否适用于 JSON 规范?

Example: Is the following code valid against the JSON Spec?

{
    precision: "zip"
}

或者我应该总是使用以下语法?(如果是,为什么?)

Or should I always use the following syntax? (And if so, why?)

{
    "precision": "zip"
}

我还没有在 JSON 规范中真正找到关于此的内容.尽管他们在示例中使用引号将键括起来.

I haven't really found something about this in the JSON specifications. Although they use quotes around their keys in their examples.

推荐答案

是的,您需要引号.这是为了使它更简单,并避免必须为 javascript 保留关键字使用另一种转义方法,即 {for:"foo"}.

Yes, you need quotation marks. This is to make it simpler and to avoid having to have another escape method for javascript reserved keywords, ie {for:"foo"}.

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