在代碼：function createXHR(){ if(typeof XMLHttpRequest !="undefined"){ return new XMLHttpRequest(); }else if(typeof ActiveXObject !="undefined"){ if(typeof arguments.callee.activeXString !="string"){ var versions = ["MSXML2.XMLHttp.6.0","MSXML2.XMLHttp.3.0","MSXML2.XMLHttp"]; var i,len; for (i=0,len=versions.length;i<len;i++){ try{ new ActiveXObject(versions[i]); arguments.callee.activeXString = versions[i]; break;}catch(ex){}}}return new ActiveXObject(arguments.callee.activeXString);}else{throw new Error("No XHR object available");}}在上述代碼中activeXString是什么呢
js中activeXString是什么
白豬掌柜的
2018-11-15 14:15:26
