一个ajax通用函数【看精通js】
待测试：function ajax (options){ options = { type : options.type || 'POST', url : options.url || '', timeout : options.timeout || 5000, onComplete: options.onComplete || function(){}, onError : options.onError || function(){}, onSuccess : options.onSuccess || function(){}, data : options.data || '' } if(typeof XMLHttpRequest === 'undefined'){ XMLHttpRequest = function(){ return new ActiveXObject( navigator.userAgent.indexOf('MSIE 5') >= 0 ? 'Microsoft.XMLHTTP' : 'Msxml2.XMLHTTP' ); } } var xml = new XMLHttpRequest(); xml.open(options.type,options.url,true); var timeoutLength = options.timeout; var requestDone = false; setTimeout(function(){ requestDone = true; },timeoutLength); xml.onreadystatechange = function(){ if(xml.readyState == 4 && !requestDone){ if(httpSuccess(xml)){ options.onSuccess(httpData(xml,options.type)); }else{ options.onError(); } options.onComplete(); xml = null; } }; xml.send(); function httpSuccess (r){ try{ return !r.status && location.protocol == "file:" || (r.status >= 200 && r.status < 300) || r.status == 304 || navigator.userAgent.indexOf('Safari') >= 0 && typeof r.status == 'undefined'; }catch(e){} return false; } function httpData (r,type){ var ct = r.getResponseHeader("content-type"); var data = !type && ct.indexOf('xml') >= 0 ; data = type == 'xml' || data ? r.responseXML : r.responseText; if(type == 'script'){ eval.call(window,data); return data; } }}function serialize (a){ var s = []; if(a.constructor == Array){ for(var i = 0 ; i < a.length ; i++){ s.push(a.name + '=' + encodeURIComponent(a.value)); } }else{ for(var j in a){ s.push(j + '=' + encodeURIComponent(a)); } } return s.join('&');}
页:
[1]