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Javascript creates createXmlHttpRequest object sample code_javascript skills

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Release: 2016-05-16 17:00:57
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复制代码 代码如下:

 var xmlHttp;

    function createXmlHttpRequest()
    {
        if(window.XMLHttpRequest)
        {
            xmlHttp=new XMLHttpRequest();

            if(xmlHttp.overrideMimeType)
                {
                    xmlHttp.overrideMimeType("text/xml");
                }
        }
        else if(window.ActiveXObject)
        {
            try
            {
                xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");  
            }
            catch(e)
            {
                xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");  
            }
        }
        if(!xmlHttp)
        {
            window.alert("你的浏览器不支持创建XMLhttpRequest对象");
        }
        return xmlHttp;
    }
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