AJAX深度歷險2(範例說明responseText版)

var http_request = false;
            function makeRequest(url) {
                http_request = false;
                if (window.XMLHttpRequest) { // Mozilla, Safari,其他瀏覽器...
                    http_request = new XMLHttpRequest();
                    if (http_request.overrideMimeType) {
                        http_request.overrideMimeType('text/xml');
                    }
                } else if (window.ActiveXObject) { // FOR IE
                    try {
                        http_request = new ActiveXObject("Msxml2.XMLHTTP");
                    } catch (e) {
                        try {
                        http_request = new ActiveXObject("Microsoft.XMLHTTP");
                        } catch (e) {}
                    }
                }
                if (!http_request) {
                    alert('放棄:( 不能產生 XMLHTTP 物件');
                    return false;
                }
                http_request.onreadystatechange = alertContents;
                http_request.open('GET', url, true);
                http_request.send(null);
            }
            function alertContents() {
                if (http_request.readyState == 4) {
                    if (http_request.status == 200) {
                        alert(http_request.responseText);
                    } else {
                        alert('請求時產生錯誤');
                    }
                }
            }  php爱好者站 http://www.phpfans.net 为phper提供一切资讯.
產生請求
            
步驟二:
開啟文字編輯器編輯以下程式碼，並且存檔為test.htm放在WEB SERVER 根目錄中
test.html 程式碼如下所示:
Hi JAMES 你的第一個AJAX範例。