Home
JS
JS
Tryit: JAVASCRIPT
运行 ❯
×
Change Orientation
Change Theme, Dark/Light
<!DOCTYPE html> <html> <body> <h2>XMLHttpRequest 对象</h2> <p id="demo">让 AJAX 更改此文本。</p> <button type="button" onclick="loadDoc()">更改内容</button> <script> function loadDoc() { var xhttp; if (window.XMLHttpRequest) { // 现代浏览器的代码 xhttp = new XMLHttpRequest(); } else { // code for IE6, IE5 xhttp = new ActiveXObject("Microsoft.XMLHTTP"); } xhttp.onreadystatechange = function() { if (this.readyState == 4 && this.status == 200) { document.getElementById("demo").innerHTML = this.responseText; } }; xhttp.open("GET", "ajax_info.txt", true); xhttp.send(); } </script> </body> </html>