javascript ajax请求

时间：2023-12-27 22:08:49
<!DOCTYPE html>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>

    <title></title>

    <meta charset="utf-8" />

</head>

<body>

    <input id="btn1" type="button" value="提交" />

    <script type="text/javascript">

        var oBtn = document.getElementById("btn1");

        oBtn.onclick = function () {

            var oAjax = null;

            if (window.XMLHttpRequest) {

                oAjax = new XMLHttpRequest();

            } else {

                oAjax = new ActiveXObject("");

            }

            oAjax.open("get", "aaa.txt", true);

            oAjax.send();

            oAjax.onreadystatechange = function () {

                if (oAjax.readyState == 4) {

                    if (oAjax.status == 200) {

                        alert(oAjax.responseText);

                    }

                }

            };

        };

    </script>

</body>

</html>

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