在json中为javascript：hex转义字符串 [英] Escape string for javascript: hex in json

问题描述

此字符串

{\x22Address\x22：\x22some带引号的地址\\x22 \x22}

在浏览器中被JSON.parse正确解析。为什么？ json字符串中十六进制数字的含义是什么？我找不到解释。

解决方案

在Javascript中，反斜线是一个转义字符。有几个转义序列，您可以在此处查找列表。

最重要的是：

\x 后面跟着两个十六进制字符，用ASCII代码表示一个字符

\u 后跟四个十六进制字符， unicode number

\ t ， \r ， \\\
你当然知道。它们分别是制表符，回车符和换行符。

This string

{\x22Address\x22:\x22some address with quotes \\x22 \x22}

is parsed by JSON.parse correctly in browser. Why? What do hex numbers mean in json string? I can't find explanation.

解决方案

In Javascript a backslash is an escape character. There are several escape sequences, you can find a list here.

The most important:

• \x followed by two hexadecimal characters represent a character by it's ascii code
• \u followed by four hexadecimal characters represent a character by it's unicode number
• \t, \r, \n you certainly know already. They are tab, carriage return and new line respectively.

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