火狐浏览器

Question

写了段2级联动菜单，在IE中测试没有问题，在火狐中测试出错，如果连接请求是true根本得不到值，如果改成false就下来菜单就变成undefine,debug也没有出现报错信息，代码如下：

function chang1(){ var url="<%=request.getContextPath()%>/loadmessage1.action"; send_request1(url); } var http_request = false; function createXMLHttpRequest(){ if(window.ActiveXObject){ http_request=new ActiveXObject("Microsoft.XMLHTTP"); }else if(window.XMLHttpRequest){ http_request=new XMLHttpRequest(); } } function send_request1(url){ createXMLHttpRequest(); http_request.onreadystatechange=processRequest1; http_request.open("POST", url,true); http_request.send(null); } // 处理返回信息的函数 function processRequest1(){ if (http_request.readyState == 4) { // 判断对象状态 if (http_request.status == 200||http_request.status==0) { // 信息已经成功返回，开始处理信息 updateselect1(); } } } function updateselect1(){ document.f.cgy.length = 0; document.f.cgy.options[0] = new Option('==请选择=='); var doc = http_request.responseXML; var items=doc.getElementsByTagName('cgy2'); var i=0; for(i;i<items.length;i++) { document.f.cgy.options.add(new Option(items[i].text)); } } }

Answer 1

修改这个方法
function send_request1(url){
createXMLHttpRequest();
http_request.onreadystatechange=processRequest1;
http_request.open("POST", url,true);
http_request.send(null);
}

修改成

[code="java"]
//加上这个方法
function getOs()

{

var OsObject = "";

if(navigator.userAgent.indexOf("MSIE")>0) {

return "MSIE"; //IE浏览器
}
if(isFirefox=navigator.userAgent.indexOf("Firefox")>0){

return "Firefox"; //Firefox浏览器
}
if(isSafari=navigator.userAgent.indexOf("Safari")>0) {

return "Safari"; //Safan浏览器
}
if(isCamino=navigator.userAgent.indexOf("Camino")>0){

return "Camino"; //Camino浏览器
}
if(isMozilla=navigator.userAgent.indexOf("Gecko/")>0){

return "Gecko"; //Gecko浏览器
}

}
function send_request1(url){
createXMLHttpRequest();
var btype=getOs();
http_request.onreadystatechange = (btype!="Firefox")?(processRequest1):(processRequest1());
http_request.open ("POST",url,true);
http_request.send(null);
http_request.onreadystatechange = (btype!="Firefox")?(processRequest1):(processRequest1());

} 

[/code]