如何将XML文件中的转义unicode字符读入Javascript？
[英]How do I read an escaped unicode character from an XML file into Javascript?
问题描述
I have an XML attribute which contains a Unicode character which I need to read into JavaScript and act upon, and I'm having a hard time understanding how escaping works. 
我有一个XML属性，其中包含一个Unicode字符，需要将其读入JavaScript并对其进行操作，而且我很难理解转义的工作方式。 My XML file might contain: 我的XML文件可能包含：
<item foo="\u265c" />
I bring the XML file using XMLHttpRequest, but I have the following result: 我使用XMLHttpRequest带来了XML文件，但结果如下：
x = itemObject.getAttribute('foo') // x = "\\u265c"
y = decodeURIComponent(x) // y = "\\u265c"
What am I missing here? 我在这里想念什么？ I want y to be the decoded Unicode character. 我希望y是已解码的Unicode字符。 I could create a function which catches and interprets the \\\\u\u003c/code> string and converts it, but I'm assuming there's a more elegant way to handle it. 我可以创建一个捕获并解释\\\\u\u003c/code>字符串并将其转换的函数，但是我假设有一种更优雅的方式来处理它。
Should I have it stored in the XML file differently, or should I be doing something different on the JavaScript side of things? 我应该以不同的方式将其存储在XML文件中，还是应该在JavaScript方面做一些不同的事情？ Thanks for any help anyone can provide. 感谢您提供任何帮助。
2 个解决方案
解决方案1
1 已采纳 2019-02-05 19:07:01
Your u265c unicode character in XML or HTML will be expressed like that: ♜ 您的XML或HTML u265c unicode字符将表示为： ♜ . 。
see it working here . 看到它在这里工作。
You can also write a conversion function: 您还可以编写一个转换函数：
working example 工作实例
<!DOCTYPE html>
<html>
<head>
<style>
</style>
</head>
<body>
<input type="button" value="convert" onClick="convert('u265c')"/>
<span id="myspan"></span>
<script>
function convert(unchar)
{
var base = '&#x';
var fixed = unchar.replace("u","");
document.getElementById("myspan").innerHTML = base + fixed + ";";
}
</script>
</body>
</html>
解决方案2
1 2019-02-05 21:15:52
The convention \♜ means nothing to XML or to any XML-processing software. 约定\♜对XML或任何XML处理软件没有任何意义。 (The native XML representation would be ♜ ). （本机XML表示形式为♜ ）。
If you've got a document where, for some reason, the author has decided to represent the character as \♜ rather than ♜ 如果您有文档，由于某种原因，作者决定将其表示为\♜而不是♜ , then you'll have to find some way of decoding it at application level. ，那么您将必须找到某种在应用程序级别对其进行解码的方法。 In XPath 2.0 it's not too difficult to write a simple function that converts hex to decimal, and then you can use the codepoints-to-string() function to convert the decimal number to a Unicode character. 在XPath 2.0中，编写一个将十六进制转换为十进制的简单函数并不难，然后可以使用codepoints-to-string()函数将十进制数字转换为Unicode字符。
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