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<!DOCTYPE html> <html> <body> <h2>XMLHttpRequest 对象</h2> <h2>从 XML 文件中检索数据</h2> <p><b>状态：</b> <span id="A1"></span></p> <p><b>状态文本：</b> <span id="A2"></span></p> <p><b>响应：</b> <span id="A3"></span></p> <button onclick="loadDoc('note.xml')">获取 XML 数据</button> <script> function loadDoc(url) { var xhttp = new XMLHttpRequest(); xhttp.onreadystatechange = function() { if (this.readyState == 4 && this.status == 200) { document.getElementById('A1').innerHTML = this.status; document.getElementById('A2').innerHTML = this.statusText; document.getElementById('A3').innerHTML = this.responseText; } }; xhttp.open("GET", url, true); xhttp.send(); } </script> </body> </html>