如何从url解析xml获取属性javascript

我需要从url解析xml

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这里是Java的基本设置。您需要阅读XPATH查询，并且需要添加异常处理等。但我相信这会让您开始学习

    // open the URL
    URL url = ....
    InputStream is = url.openStream();

    // build a document parser
    DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
    domFactory.setNamespaceAware(true);
    DocumentBuilder builder = domFactory.newDocumentBuilder();

    // parse the document from the URL
    Document d = builder.parse(is);

    // set up XPATH to examine/query the XML
    XPathFactory factory = XPathFactory.newInstance();
    XPath xpath = factory.newXPath();

    // use XPATH query to find the required information
    String sale = xpath.evaluate("/exchangerates/row[@ccy='USD']/@sale", d);

    System.out.println("USD sale is "+sale);

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你打算使用什么编程语言？javascript，它将是网页。你应该删除JAVA标记：）geert3下面的答案是JAVA@AndreyE-和主题标题谢谢你的更正如果此代码必须解析信息，我有一个白色页面=（我知道爪哇非常糟糕抱歉，伙计。我可以提供一些食物，但咀嚼和吞咽取决于你。这就是精神；-）

(like mycurrency = 10 )
(like usd = 14.97306 )
(mycurrency * usd = 149.7306)

    // open the URL
    URL url = ....
    InputStream is = url.openStream();

    // build a document parser
    DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
    domFactory.setNamespaceAware(true);
    DocumentBuilder builder = domFactory.newDocumentBuilder();

    // parse the document from the URL
    Document d = builder.parse(is);

    // set up XPATH to examine/query the XML
    XPathFactory factory = XPathFactory.newInstance();
    XPath xpath = factory.newXPath();

    // use XPATH query to find the required information
    String sale = xpath.evaluate("/exchangerates/row[@ccy='USD']/@sale", d);

    System.out.println("USD sale is "+sale);