NETWORK_ERR:XMLHttpRequest 异常 101

I'm having an AJAX problem in Chrome, giving the following error:

Uncaught Error: NETWORK_ERR: XMLHttpRequest Exception 101

这是我的代码:

function IO(filename) {
    if (window.XMLHttpRequest) { // Mozilla, Safari,...
        xmlhttp = new XMLHttpRequest();

    } else if (window.ActiveXObject) { // IE
        try {
            xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
        } catch (e) {
            try {
                xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) { }
        }
    }

    xmlhttp.open("GET", filename+"?random="+Math.floor(Math.random()*100000001), false);
    xmlhttp.send();

    if(xmlhttp.readyState==4)
        return xmlhttp.responseXML;
}

推荐答案

解决方案是将 async 参数设置为 true:

xmlhttp.open("GET", filename+"?random="+Math.floor(Math.random()*100000001), true);