javascript - jquery ajax response error not working -


i have ajax call api return correctly (200) when url , parameters fine. trying force error bad request. console inform me error code 400 never seems error method. instead gets stuck in jquery line , never returns.

 fetch: function(successcallback, errorcallback) {         var apiurl = this.applyfilter(filters);         var self = this;          this.log('fetch', apiurl, currentsearchmode);          $.ajax({             url: apiurl,             type: 'get',             cache: (debug) ? true: false,             processdata: true,             crossdomain: true,             scriptcharset: 'utf-8',             jsonp: 'callback',             datatype: 'jsonp',             success: function(data, statustext, jqxhr) {                 console.log(jqxhr);                 // if(jqxhr.status == 400){                 //     console.log('there error');                 // }                 self.log('fetch::success', data);                 if (typeof data.error !== 'undefined') {                     shownoresulterror = true;                     var appdata = lastvalidresult[currentsearchmode];                 } else {                     shownoresulterror = false;                     var appdata = self.normalize[currentsearchmode](self, data);                     lastvalidresult[currentsearchmode] = appdata;                 }                 if (typeof successcallback === 'function')                     successcallback(appdata);             },             error: function(jqxhr, textstatus, errorthrown) {                 //do sth here                  // if(jqxhr.status&&jqxhr.status==400){                 //     alert(jqxhr.responsetext);                 // }else{                 //     alert("something went wrong");                 // }                 // console.log('works now');                 // self.log('fetch::error', textstatus, errorthrown);                 // if (typeof errorcallback === 'function')                 //     errorcallback.apply(this, arguments);             },             complete: function(jqxhr, textstatus) {                 console.log(jqxhr);                 console.log('complete');             }         });     },

so image shows gets stuck. can catch complete , success functions when there 400 response there nothing happening. tried anything, done(), fail() since assumed there might problem deprecated behavior. same problem there. can help, please?

try:

fetch: function(successcallback, errorcallback) {         var apiurl = this.applyfilter(filters);         var self = this;          this.log('fetch', apiurl, currentsearchmode);          $.ajax({             url: apiurl,             type: 'get',             cache: (debug) ? true: false,             processdata: true,             crossdomain: true,             scriptcharset: 'utf-8',             jsonp: 'callback',             datatype: 'jsonp',             success: function(data, statustext, jqxhr) {                 console.log(jqxhr);                 // if(jqxhr.status == 400){                 //     console.log('there error');                 // }                 self.log('fetch::success', data);                 if (typeof data.error !== 'undefined') {                     shownoresulterror = true;                     var appdata = lastvalidresult[currentsearchmode];                 } else {                     shownoresulterror = false;                     var appdata = self.normalize[currentsearchmode](self, data);                     lastvalidresult[currentsearchmode] = appdata;                 }                 if (typeof successcallback === 'function')                     successcallback(appdata);             },             error: function(data){                 console.log(data);                 console.log(data.responsetext);             },             complete: function(jqxhr, textstatus) {                 console.log(jqxhr);                 console.log('complete');             }         });     },

then, show me what's in console


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