Function getXMLItem

bootstrap-js/modules/ts_helpers.js:223–232

(xmlDoc, selector, context = '' ,fallbackSelector = '')

parse XML and return innerHTML value by selector (XPath)
*/
export function getXMLItem(xmlDoc, selector, context = '' ,fallbackSelector = ''){
    context = context ? context : xmlDoc;
    let nsResolver = xmlDoc.createNSResolver( xmlDoc.ownerDocument == null ? xmlDoc.documentElement : xmlDoc.ownerDocument.documentElement);
    let xmlNode;

    xmlNode = xmlDoc.evaluate(selector, context, nsResolver, XPathResult.ANY_TYPE, null );
    xmlNode = (xmlNode && !fallbackSelector) ? xmlNode : xmlDoc.evaluate(fallbackSelector, context, nsResolver, XPathResult.ANY_TYPE, null );

    return xmlNode ? xmlNode.iterateNext() : false;
}

/**
 * Method for simple handle Promices, like "const [error, result] = await to(someAsyncData());"