JSON.stringify是否不转义Unicode字符? [英] Shouldn't JSON.stringify escape Unicode characters?

问题描述

我在UTF-8中有一个简单的测试页，其中带有多种不同语言字母的文本被字符串化为JSON:

I have a simple test page in UTF-8 where text with letters in multiple different languages gets stringified to JSON:

http://jsfiddle.net/Mhgy5/

HTML:

<textarea id="txt">
検索 • Busca • Sök • 搜尋 • Tìm kiếm • Пошук • Cerca • Søk • Haku • Hledání • Keresés • 찾기 • Cari • Ara • جستجو • Căutare • بحث • Hľadať • Søg • Serĉu • Претрага • Paieška • Poišči • Cari • חיפוש • Търсене • Іздеу • Bilatu • Suk • Bilnga • Traži • खोजें
</textarea>
<button id="encode">Encode</button>
<pre id="out">
</pre>

JavaScript:

JavaScript:

​$("#encode").click(function () {
    $("#out").text(JSON.stringify({ txt: $("#txt").val() }));
}).click();
​

尽管我希望根据 JSON规范将非ASCII字符转义为\ uXXXX，但它们似乎没有被修改.这是我从上述测试中获得的输出:

While I expect the non-ASCII characters to be escaped as \uXXXX as per the JSON spec, they seem to be untouched. Here's the output I get from the above test:

{"txt":"検索 • Busca • Sök • 搜尋 • Tìm kiếm • Пошук • Cerca • Søk • Haku • Hledání • Keresés • 찾기 • Cari • Ara • جستجو • Căutare • بحث • Hľadať • Søg • Serĉu • Претрага • Paieška • Poišči • Cari • חיפוש • Търсене • Іздеу • Bilatu • Suk • Bilnga • Traži • खोजें\n"}

我正在使用Chrome，因此它应该是本机JSON.stringify实施.页面的编码为UTF-8.非ASCII字符不应该转义吗?

I'm using Chrome, so it should be the native JSON.stringify implementation. The page's encoding is UTF-8. Shouldn't the non-ASCII characters be escaped?

首先让我参加此测试的是，我注意到jQuery.ajax出现在数据对象属性中时，似乎没有转义非ASCII字符.这些字符似乎是以UTF-8格式传输的.

What brought me to this test in the first place is, I noticed that jQuery.ajax doesn't seem to escape non-ASCII characters when they appear in a data object property. The characters seem to be transmitted as UTF-8.

推荐答案

JSON规范不需要从Unicode字符转义序列. 除或\或控制字符外的任何UNICODE字符."被定义为有效的JSON序列化字符串:

The JSON spec does not demand the conversion from unicode characters to escape-sequences. "Any UNICODE character except " or \ or control character." is defined to be a valid JSON-serialized string:

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