ajax reponseXML json

最新推荐文章于 2025-12-26 20:54:10 发布

原创最新推荐文章于 2025-12-26 20:54:10 发布 · 112 阅读

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#json #Ajax #PHP #XML #JavaScript #ViewUI

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本文通过示例展示了如何使用JavaScript从XML和JSON数据源中解析书籍信息，并将其显示在网页上。涉及的技术包括XMLHttpRequest获取外部数据、DOM操作以及JSON数据处理。

<script>
var req = null;
function processReqChange() {
  if (req.readyState == 4 && req.status == 200 && req.responseXML ) {
    var dtable = document.getElementById( 'dataBody' );
    var nl = req.responseXML.getElementsByTagName( 'book' );
    for( var i = 0; i < nl.length; i++ ) {
      var nli = nl.item( i );
      var elAuthor = nli.getElementsByTagName( 'author' );
      var author = elAuthor.item(0).firstChild.nodeValue;
      var elTitle = nli.getElementsByTagName( 'title' );
      var title = elTitle.item(0).firstChild.nodeValue;

      var elTr = dtable.insertRow( -1 );

      var elAuthorTd = elTr.insertCell( -1 );
      elAuthorTd.innerHTML = author;

      var elTitleTd = elTr.insertCell( -1 );
      elTitleTd.innerHTML = title;
} } }

function loadXMLDoc( url ) {
  if(window.XMLHttpRequest) {
    try { req = new XMLHttpRequest();
    } catch(e) { req = false; }
  } else if(window.ActiveXObject) {
    try { req = new ActiveXObject('Msxml2.XMLHTTP');
    } catch(e) {
    try { req = new ActiveXObject('Microsoft.XMLHTTP');
    } catch(e) { req = false; }
  } }
  if(req) {
    req.onreadystatechange = processReqChange;
    req.open('GET', url, true);
    req.send('');
  }
}

var url = window.location.toString();
url = url.replace( /pat2_xml.html/, 'pat2_xml_data.xml' );
loadXMLDoc( url );
</script>

XML:

<books>
  <book>
    <author>Jack Herrington</author>
    <title>Code Generation in Action</title>
  </book>
  <book>
    <author>Jack Herrington</author>
    <title>Podcasting Hacks</title>
  </book>
  <book>
    <author>Jack Herrington</author>
    <title>PHP Hacks</title>
  </book>
</books>

json:JavaScript Object Notation（JSON）

var req = null;
function processReqChange() {
  if (req.readyState == 4 && req.status == 200 ) {
    var dtable = document.getElementById( 'dataBody' );
    var books = eval( req.responseText );
    for( var b in books ) {
      var elTr = dtable.insertRow( -1 );

      var elAuthorTd = elTr.insertCell( -1 );
      elAuthorTd.innerHTML = books[b].author;

      var elTitleTd = elTr.insertCell( -1 );
      elTitleTd.innerHTML = books[b].title;
} } }



[ { author: 'Jack Herrington', title: 'Code Generation in Action' },
{ author: 'Jack Herrington', title: 'Podcasting Hacks' },
{ author: 'Jack Herrington', title: 'PHP Hacks' }
]