- php基础编程 - 帮我看看这个ajax哪错了，好郁闷哪？ - 喜悦国际村

riwsh (riwsh)
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帮我看看这个ajax哪错了，好郁闷哪？

CODE:

<?
<script language="javascript">
//构建一个xmlHTTP的对像
function create_xmlhttp(){
    if(typeof XMLHttpRequest!="undefined")        {
                return new XMLHttpRequest();
        }else if(typeof ActiveXObject!="undefined"){
                var xmlHttp_ver  = false;
                var xmlHttp_vers = ["MSXML2.XmlHttp.5.0","MSXML2.XmlHttp.4.0","MSXML2.XmlHttp.3.0","MSXML2.XmlHttp","Microsoft.XmlHttp"];
                if(!xmlHttp_ver){
                        for(var i=0;i<xmlHttp_vers.length;i++){
                                try{
                                        new ActiveXObject(xmlHttp_vers[i]);
                                        xmlHttp_ver = xmlHttp_vers[i];
                                        break;
                                }catch(oError){;}
                        }
                }
                if(xmlHttp_ver){
                        return new ActiveXObject(xmlHttp_ver);
                }else{
                        throw new Error("Could not create XML HTTP Request.");
                }
        }else{
                throw new Error("Your browser doesn't support an XML HTTP Request.");
        }

}

function loadXMLTreeDoc()
{
    var xmlHttp = create_xmlhttp();
    var url = "./test.php?job=getmsg";

            xmlHttp.onreadystatechange = processReqChange;
            xmlHttp.open("GET", url, true);
            xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=utf-8');
            xmlHttp.send(null);

    setTimeout( "loadXMLTreeDoc()" , 500 );
}

function processReqChange() {

    if (xmlHttp.readyState == 4) {
        if (xmlHttp.status == 200) {
            talkmsg.document.body.innerHTML=xmlHttp.responseText;
            talkmsg.scroll(0,50000);
            xmlHttp=null;
        } else {
            alert("Sorry,there was a problem retrieving the XML data, please check network!");
        }
    }
}
</script>

?>

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2006-9-20 10:05 AM

#1

kuco
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CODE:

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<?php
<script language="javascript">

var xmlHttp; //定义成全局变量

//构建一个xmlHTTP的对像
function create_xmlhttp(){
    if(typeof XMLHttpRequest!="undefined")        {
                return new XMLHttpRequest();
        }else if(typeof ActiveXObject!="undefined"){
                var xmlHttp_obj  = false;   //修改了变量名
                var xmlHttp_vers = ["MSXML2.XmlHttp.5.0","MSXML2.XmlHttp.4.0","MSXML2.XmlHttp.3.0","MSXML2.XmlHttp","Microsoft.XmlHttp"];
                if(!xmlHttp_obj){
                        for(var i=0;i<xmlHttp_vers.length;i++){
                                try{
                                        //自我觉得这样子更好理解
                                        //new ActiveXObject(xmlHttp_vers[i]);
                                        xmlHttp_obj = new ActiveXObject(xmlHttp_vers[i]);
                                        break;
                                }catch(oError){;}
                        }
                }
                if(xmlHttp_obj){
                        //return new ActiveXObject(xmlHttp_ver);
                        return xmlHttp_obj;
                }else{
                        throw new Error("Could not create XML HTTP Request.");
                }
        }else{
                throw new Error("Your browser doesn't support an XML HTTP Request.");
        }

}

function loadXMLTreeDoc()
{
    //var xmlHttp = create_xmlhttp();
    xmlHttp = create_xmlhttp();
    var url = "./test.php?job=getmsg";

            xmlHttp.onreadystatechange = processReqChange;
            xmlHttp.open("GET", url, true);
            xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=utf-8');
            xmlHttp.send(null);

    //setTimeout( "loadXMLTreeDoc()" , 500 );
}

function processReqChange() {
    if (xmlHttp.readyState == 4) {
        if (xmlHttp.status == 200) {
            //talkmsg.document.body.innerHTML=xmlHttp.responseText;
            //talkmsg.scroll(0,50000);
            //调试返回信息
            alert(xmlHttp.responseText);
            xmlHttp=null;
        } else {
            alert("Sorry,there was a problem retrieving the XML data, please check network!");
        }
    }
}

//运行.  简单的测试已通过
loadXMLTreeDoc();

</script>
?>

[ 本帖最后由 kuco 于 2006-9-20 10:58 AM 编辑 ]

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2006-9-20 10:57 AM

#2