crossbrowserxmlhttprequestexample.htm

来自「java脚本开发」· HTM 代码 · 共 46 行

HTM
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<html>
    <head>
        <title>XML HTTP Request Example</title>
        <script type="text/javascript">
        
                if (typeof XMLHttpRequest == "undefined" && window.ActiveXObject) {
                    function XMLHttpRequest() {
                
                        var arrSignatures = ["MSXML2.XMLHTTP.5.0", "MSXML2.XMLHTTP.4.0",
                                             "MSXML2.XMLHTTP.3.0", "MSXML2.XMLHTTP",
                                             "Microsoft.XMLHTTP"];
                                         
                        for (var i=0; i < arrSignatures.length; i++) {
                            try {
                        
                                var oRequest = new ActiveXObject(arrSignatures[i]);
                            
                                return oRequest;
                        
                            } catch (oError) {
                                //ignore
                            }
                        }          
                
                        throw new Error("MSXML is not installed on your system.");               
                    }
                }

                
                function getServerInfo() {
                        var oRequest = new XMLHttpRequest();
                        oRequest.open("get", "example.txt", false);
                        oRequest.send(null);
                        alert("Status is " + oRequest.status + " (" + oRequest.statusText + ")");
                        alert("Response text is: " + oRequest.responseText);
                }

        </script>
    </head>
    <body>
        <p>Click the button to make a call to the server using an XML HTTP request.
        This example works in all browsers that support an XML HTTP request object.</p>
        <input type="button" onclick="getServerInfo()" value="Get Server info" />
    </body>
</html>

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