摘要：
//根据不同的浏览器创建异步对象function createXmlHttp() { xhobj = false; try { xhobj = new ActiveXObject("Msxml2.XMLHTTP"); // iemsxml3.0+ } catch (e) { try { xhobj = new ActiveXObject("Microsoft.XMLHTTP"); //iemsxml2.6 } catch (e2) { xhobj = false; } } if (!xhobj && typeof XMLHttpReque 阅读全文