jQuery traversing XML nodes and attributes implementation steps

This time I will bring you the steps to implement jQuery for traversing XML nodes and attributes. What are the precautions for jQuery for traversing XML nodes and attributes? The following is a practical case, let’s take a look.

After some research, it seems that jquery does not have attributes. We still need to rely on the original JS

The following is the JS code

<script type="text/javascript" src="js/jquery.min.js"></script>
<p id="c"></p>
<script>
//用于缩进, 根据节点级别
var M_DOT = 1;
//递归函数, 用于遍历XML, 同时打印出来
function fn(obj){
  //定义一个变量, 用于缩进
  var dotString = "";
  //根据缩进量, 得到缩进的长度
  for(j = 1; j <= M_DOT; j++){
    dotString += "    ";
  }
  //jquery不支持attributes属性集, 转为原生js, 并赋给myObj变量
  var myObj = obj[0].attributes;
  //打印缩进
  $("#c").append(dotString)
  //打印属性集nodeName, nodeValue为原生JS, 分别表示为属性的名称, 和属性值
  $(myObj).each(function(i){
    $("#c").append( ($(this)[0].nodeName) + "=<u>" + ($(this)[0].nodeValue) + "</u> " );
  })
  //打印节点的文本
  //$("#c").append( "<b>" + obj.text() + "</b><br/>");
  //打印换行
  $("#c").append( "<br/>");
  //判断DOM有无子DOM
  if( obj.length > 0 ){
    //如果有, 遍历之
    obj.children().each(function(i){
      //缩进量加一
      M_DOT++;
      //递归遍历子DOM
      fn($(this));
      //缩进量加一
      M_DOT--;
    })
  }else{
    //如果没有子DOM, 返回false
    return false;
  }
}
//程序入口
$(document).ready(function() {
  //ajax获取xml数据, 详细用法见jquery手册
  $.get('config.xml', function(d){
    //len = $(d).find("*").length;
    //找到xml顶级结点. ('*:first'):就是查找第一个DOM. 详细说明见jquery手册
    //find, children(), each, 以及后面用到的 append 等请查阅jquery手册
    $(d).find('*:first').children().each(function(i){
      //找到顶级结点的子结点, 并把子结点对象传给fn函数
      fn($(this));
    });
  });
});
</script>

Attached is an XML file

Please name config.xml and put it in the same directory as the above js, and put them both in the site

<?xml version="1.0" encoding="utf-8" ?>
<roster>
  <student ID="s101">
    <name>李华</name>
    <sex>男</sex>
    <birthday>1978.9.12</birthday>
    <score>92</score>
    <skill>Java</skill>
    <skill>Oracle</skill>
    <skill>C Sharp</skill>
    <skill>SQL Server</skill>
  </student>
  <student ID="s107">
    <name>李寻欢</name>
    <sex>男</sex>
    <birthday>1981.4.19</birthday>
    <score>58</score>
    <skill>UML</skill>
    <skill>C Sharp</skill>
    <skill>XML</skill>
    <skill>SQL Server</skill>
  </student>
</roster>

I believe you have mastered the method after reading the case in this article. Please pay attention for more exciting things. Other related articles on php Chinese website!

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