点击运行
<!DOCTYPE html> <html> <body> <h1>XMLHttpRequest 对象</h1> <p id="demo">让 AJAX 改变这段文本。</p> <button type="button" onclick="loadDoc()">更改内容</button> <script> function loadDoc() { var xhttp = new XMLHttpRequest(); xhttp.onreadystatechange = function() { if (this.readyState == 4 && this.status == 200) { document.getElementById("demo").innerHTML = this.responseText; } }; xhttp.open("GET", "/zy/example/js/ajax_info.txt", true); xhttp.send(); } </script> </body> </html>
运行结果
