json.js 和 json2.js 的区别
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Difference between json.js and json2.js
提问by
Can someone tell me what the difference is between the 2 JSON parsers?
有人能告诉我 2 个 JSON 解析器之间有什么区别吗？
https://github.com/douglascrockford/JSON-js/blob/master/json.js
https://github.com/douglascrockford/JSON-js/blob/master/json2.js
https://github.com/douglascrockford/JSON-js/blob/master/json.js
https://github.com/douglascrockford/JSON-js/blob/master/json2.js
I have a JSON file from 2007-04-13 (It has methods such as parseJSON). I don't see these methods in any of the new versions.
我有一个 2007-04-13 的 JSON 文件（它有诸如 的方法parseJSON）。我在任何新版本中都没有看到这些方法。
采纳答案by Luca Matteis
From their code:
从他们的代码：
// Augment the basic prototypes if they have not already been augmented.
// These forms are obsolete. It is recommended that JSON.stringify and
// JSON.parse be used instead.
if (!Object.prototype.toJSONString) {
Object.prototype.toJSONString = function (filter) {
return JSON.stringify(this, filter);
};
Object.prototype.parseJSON = function (filter) {
return JSON.parse(this, filter);
};
}
I guess parseJSON is obsolete, therefore the new version (json2) doesn't even use it anymore. However if your code uses parseJSONa lot you could just add this piece of code somewhere to make it work again:
我猜 parseJSON 已经过时了，因此新版本 (json2) 甚至不再使用它了。但是，如果您的代码使用parseJSON很多，您可以在某处添加这段代码以使其再次工作：
Object.prototype.parseJSON = function (filter) {
return JSON.parse(this, filter);
};
回答by paxdiablo
回答by Vimil Saju
I also noticed that json2 stringified arrays differently than json2007.
我还注意到 json2 字符串化数组与 json2007 不同。
In json2007:
在 json2007 中：
var array = [];
array[1] = "apple";
array[2] = "orange";
alert(array.toJSONString()); // Output: ["apple", "orange"].
In json2:
在 json2 中：
var array = [];
array[1] = "apple";
array[2] = "orange";
alert(JSON.stringify(array)); // Output: [null, "apple", "orange"].
