such as specifying callback functions for success and error, setting request headers, handling data types, and adding authentication tokens for HTTP access authentication requests, which makes it highly adaptable to various scenarios beyond the capabilities of shorthand Ajax call functions like $.get()...
$.ajax({ statusCode: { 404:function(){ alert("page not found"); } } }); If the request is successful, the status code functions take the same parameters as the success callback; if it results in an error (including 3xx redirect), they take the same parameters as theerrorcallback....
and the ajax library will call fail instead of success. you can return a json object with status info, its your call, but you need to add error handling support to the client.
$.ajax({ statusCode: { 404:function(){ alert("page not found"); } } }); If the request is successful, the status code functions take the same parameters as the success callback; if it results in an error (including 3xx redirect), they take the same parameters as theerrorcallback....
in the creation of the request. When an HTTP error occurs, the fourth argument (thrownError) receives the textual portion of the HTTP status, such as "Not Found" or "Internal Server Error." For example, to restrict the error callback to only handling events dealing with a particular URL:...
ajaxLocation=location.href; }catch( e ) {//兼容性,动态创建a标签,a标签的href是空,然后就可以获取当前页面地址ajaxLocation = document.createElement( "a"); ajaxLocation.href= ""; ajaxLocation=ajaxLocation.href; }//Segment location into partsajaxLocParts = rurl.exec( ajaxLocation.toLowerCase()...
jQuery.ajax({// just showing error property error: function(jqXHR,error, errorThrown) { if(jqXHR.status&&jqXHR.status==400){ alert(jqXHR.responseText); }else{ alert("Something went wrong"); } } }); 通用Ajax 错误处理 如果我需要对所有 ajax 请求进行一些常规的错误处理。我将设置 ajaxError 处...
** Opera is inconsistent in its handling of jQuery ajax error responses, so relying on the values ofxhr.status,status, orerrorin anajax:errorcallback handler may cause inconsistent behavior in Opera. Stoppable events If you stopajax:beforeorajax:beforeSendby returningfalsefrom the handler method...
alert(ajaxLocParts); 首先来一段精简版的$.ajax方法:也就是其中的原理 var completeDeferred = jQuery.Callbacks("once memory"); var dfd=new $.Deferred(); var jqXHR={ } //jqXHR有了promise所有方法,但是修改状态还是要靠Deferred对象! //同时为这个jqXHR封装一个Callbacks对象,调用complete就想相当于向其...
$.ajax( { url: url, data: data, type: "POST", processData: true, contentType: "application/json", timeout: 10000, dataType: "json", success: callback, error: error }); } When you send data like this you can actually change the message format to Bare and get just a raw obje...