AJAX快速入门

 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <script>
        //1. 创建核心对象
        var xhttp;
        if (window.XMLHttpRequest){
           xhttp = new XMLHttpRequest();
        }else {
            //code for IE6 IE5
            xhttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        //2. 发送请求
        xhttp.open("GET","http://localhost:8080/ajax-demo/ajaxServlet");
        xhttp.send();

        //3. 获取响应
        xhttp.onreadystatechange = function () {
            if (xhttp.readyState == 4 && xhttp.status == 200){
                alert(xhttp.responseText);
            }
        }
    </script>
</body>
</html>

 

posted @ 2023-07-03 15:10  Karlshell  阅读(13)  评论(0)    收藏  举报