如何使用 JavaScript 在 XML 文件中添加 & > 等特殊字符
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How to add special characters like & > in XML file using JavaScript
提问by Tokendra Kumar Sahu
I am generating XML using Javascript. It works fine if there are no special characters in the XML. Otherwise, it will generate this message: "invalid xml".
我正在使用 Javascript 生成 XML。如果 XML 中没有特殊字符，它就可以正常工作。否则，它将生成此消息：“无效的 xml”。
I tried to replace some special characters, like:
我尝试替换一些特殊字符，例如：
xmlData=xmlData.replaceAll(">",">");
xmlData=xmlData.replaceAll("&","&");
//but it doesn't work.
For example:
例如：
<category label='ARR Builders & Developers'>
Thanks.
谢谢。
采纳答案by maerics
Consider generating the XML using DOM methods. For example:
考虑使用 DOM 方法生成 XML。例如：
var c = document.createElement("category");
c.setAttribute("label", "ARR Builders & Developers");
var s = new XMLSerializer().serializeToString(c);
s; // => "<category label=\"ARR Builder & Developers\"></category>"
This strategy should avoid the XML entity escaping problems you mention but might have some cross-browser issues.
此策略应避免您提到的 XML 实体转义问题，但可能存在一些跨浏览器问题。
回答by jabclab
This will do the replacement in JavaScript:
这将在 JavaScript 中进行替换：
xml = xml.replace(/</g, "<");
xml = xml.replace(/>/g, ">");
This uses regular expression literalsto replace all less than and greater than symbols with their escaped equivalent.
这使用正则表达式文字将所有小于和大于符号替换为其转义等价物。
回答by Federico Zancan
JavaScript comes with a powerful replace()method for string objects.
JavaScriptreplace()为字符串对象提供了一个强大的方法。
In general - and basic - terms, it works this way:
一般来说 - 和基本 - 术语，它是这样工作的：
var myString = yourString.replace([regular expression or simple string], [replacement string]);
The first argument to .replace()method is the portion of the original string that you wish to replace. It can be represented by either a plain string object (even literal) or a regular expression.
.replace()method的第一个参数是您希望替换的原始字符串部分。它可以由纯字符串对象（甚至文字）或正则表达式表示。
The regular expression is obviously the most powerful way to select a substring.
正则表达式显然是最强大的选择子串的方式。
The second argument is the string object (even literal) that you want to provide as a replacement.
第二个参数是您要提供作为替换的字符串对象（甚至是文字）。
In your case, the replacement operation should look as follows:
在您的情况下，替换操作应如下所示：
xmlData=xmlData.replace(/&/g,"&");
xmlData=xmlData.replace(/>/g,">");
//this time it should work.
Notice the first replacement operation is the ampersand, as if you should try to replace it later you would screw up pre-existing well-quoted entities for sure, just as "&gt;".
请注意，第一个替换操作是与号，就好像您应该稍后尝试替换它一样，您肯定会搞砸预先存在的引用良好的实体，就像"&gt;".
In addition, pay attention to the regex 'g' flag, as with it the replacement will take place all throughout your text, not only on the first match.
此外，请注意正则表达式 'g' 标志，因为它会在整个文本中进行替换，而不仅仅是在第一场比赛中。
I used regular expressions, but for simple replacements like these also plain strings would be a perfect fit.
我使用了正则表达式，但对于像这样的简单替换，纯字符串也非常适合。
You can find a complete reference for String.replace()here.
您可以在String.replace()此处找到完整的参考资料。
