我正在使用下面显示的XML代码。我已经请求并检索了代码。我需要编写一个函数: 1)接收输入的代码 2)动态返回与subnational1-code =“US-MI”对应的数据库中的subnational2-code和标记值“Kent”
<result>
<location country-code="US" subnational1-code="US-TX" subnational2-code="US-TX-263">Kent</location>
<location country-code="US" subnational1-code="US-VA" subnational2-code="US-VA-127">New Kent</location>
<location country-code="US" subnational1-code="US-DE" subnational2-code="US-DE-001">Kent</location>
<location country-code="US" subnational1-code="US-KY" subnational2-code="US-KY-117">Kenton</location>
<location country-code="US" subnational1-code="US-MD" subnational2-code="US-MD-029">Kent</location>
<location country-code="US" subnational1-code="US-MI" subnational2-code="US-MI-081">Kent</location>
<location country-code="US" subnational1-code="US-RI" subnational2-code="US-RI-003">Kent</location>
<location country-code="CA" subnational1-code="CA-NB" subnational2-code="CA-NB-KE">Kent</location>
<location country-code="CA" subnational1-code="CA-ON" subnational2-code="CA-ON-KT">Chatham-Kent</location>
<location country-code="GB" subnational1-code="GB-ENG" subnational2-code="GB-ENG-KEN">Kent</location>
</result>
以下是我过去使用的代码(getData工作),或者我想弄清楚。这不一定非必须使用:
var subnational1-code="US-MI";
var subnational2-name="Kent";
var itemList = response.getElementsByTagName("result");
for(i=0;i<itemList.length){
var d = getData(itemList.item(i));
// What code goes here??
// If (subnational2-value==subnational2-name&&subnational1-valuue=="US-MI");
}
function getData(n) {
var d = new Object();
var nodeList = n.childNodes;
for (var j = 0; j < nodeList.length ; j++) {
var node = nodeList.item(j);
d[node.nodeName] = node.firstChild.nodeValue;
} return d;
}
这种情况下的输出应为:
var output = "US-MI-081";
我非常感谢你的帮助。对于任何可以为我提供工作功能的人来说,+1以上!在此先感谢!!
答案 0 :(得分:1)
我会使用XPath来检索节点。
尝试使用document.evaluate()函数:
var xpathResult = document.evaluate("location[@subnational1-code='US-MI' and text() = 'Kent']/@subnational2-code", itemList, null, XPathResult.ANY_TYPE, null);
答案 1 :(得分:1)
不确定这是否完全是您所寻找的,但这是一种解析它的javascript方式。希望这对你有用。
var output = "";
var subnational1Code="US-MI";
var subnational2Name="Kent";
var itemList = document.getElementsByTagName("result");
for(var i = 0;i<itemList.length; i++){
var d = getData(itemList.item(i));
for(var k in d)
if (d[k].sub1 === subnational1Code && d[k].value === subnational2Name)
output = d[k].sub2;
}
function getData(n) {
var objArray = new Array();
var nodeList = n.childNodes;
for (var j = 0; j < nodeList.length ; j++) {
var node = nodeList.item(j);
var o = new Object();
o["value"] = node.firstChild.nodeValue;
o["country"] = node.attributes["country-code"].nodeValue;
o["sub1"] = node.attributes["subnational1-code"].nodeValue;
o["sub2"] = node.attributes["subnational2-code"].nodeValue;
objArray.push(o);
} return objArray;
}
// console.log(output); //in case you wanted to debug it