xml2js，属性名称包含连字符

Question

Using xml2js to parse an XML file, I need to retrieve the value of an attribute which contains a hyphen in its name

<item cdr-id="1234">
    <name>some text</name>
</item>

At the point where I'm trying to retrieve cdr-id , I already have a variable item which points to the item element. I've verified it's pointing to the proper node with

console.log(item.name);

and that returns the expected value some text . But when I try

console.log(item.$.cdr-id);

I get the completely reasonable error ReferenceError: id is not defined (I'd have been more surprised if id wasn't treated as a separate token).

Likewise,

console.log(item.$."cdr-id");

gets the message SyntaxError: Unexpected string .

Throwing JSON.stringify around it

console.log( JSON.stringify(item.$));

reveals the original attribute name: {"cdr-id":"CDR0000040222"}

Not having hyphens in the name in the first place just kicks the problem down the road a bit. Failing that, it looks like providing a custom attribute name processor is the way to go, but that smacks of being "too clever" with potential for confusion if anyone ever has to update this code.

Is there a better way to do this?

Answer 1

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console.log(item.$["cdr-id"]);