Google Map API v3 parsing xml and getting elements by tag name

问题

I'm having some problems in parsing my xml to be overlayed in google map as markers, first off, I have an XML file like this

<root>

<weather>

<city>city_name</city>

<level>1</level>

<data>weather_data</data>

<lat>-6.211544</lat>

<lon>106.845172</lon>

<elevation>13.41</elevation>

</weather>

</root>

as you can see I contain the necessary data inside one tag, not attribute, problem is, in V2 I used GDownloadUrl and GXml parse and getelementsbytagname method works. In V3 it seems I can't use GDownloadUrl, and all the examples I've seen on the internet uses attribute parsing. Can anyone please help?

回答1:

See the source for geoxml3 (either the polys branch or the kmz branch); the nodeValue function, this is from the kmz branch, the polys branch is slightly different, either will work:

/**
 * Extract the text value of a DOM node, with leading and trailing whitespace trimmed.
 *
 * @param {Element} node XML node/element.
 * @param {Any} delVal Default value if the node doesn't exist.
 * @return {String|Null}
 */
geoXML3.nodeValue = function(node, defVal) {
  var retStr="";
  if (!node) {
    return (typeof defVal === 'undefined' || defVal === null) ? null : defVal;
  }
  if(node.nodeType==3||node.nodeType==4||node.nodeType==2){
     retStr+=node.nodeValue;
  }else if(node.nodeType==1||node.nodeType==9||node.nodeType==11){
    for(var i=0;i<node.childNodes.length;++i){
      retStr+=arguments.callee(node.childNodes[i]);
    }
  }
  return retStr;
}

Another option is this implementation of the two Gxml functions from v2.

来源：https://stackoverflow.com/questions/13657364/google-map-api-v3-parsing-xml-and-getting-elements-by-tag-name

标签

google-maps-api-3

xml-parsing