javascript - How to display error (text/html) response to an AJAX/getJSON request? -


my situation is, i'm developing little web app server provides dynamic json responses. server built on cherrypy. sometimes, there bug in code creating json data, throws, , cherrypy catches , serves 500-error full html page detailing exception. (that is, response has everything: <!doctype..><html><head>...</head><body>...</body></html>) because request ajax, doesn't displayed.

i can intercept error enough, , @ in dev tools; i'd (to ease debugging) open new page (as if user had followed link) , display response in browser. tried

window.open('', '_self'); $(document).html(jqxhr.responsetext);

but blank page. suppose store error text , serve in second request server, there cleaner way?

to follow up, final code worked this:

.error(function(jqxhr, textstatus, errorthrown) {     $(window).bind('unload', function() { document.write(jqxhr.responsetext); } );     var win = window.open('', '_self');     return false; });

not sure if final return false necessary seems form.

following again: above code worked reliably in opera. thought had seen working in webkit well, started noticing wasn't; , on further testing, wasn't working firefox either.

what found worked in 3 platforms this:

document.open('text/html', true); document.write(jqxhr.responsetext); document.close();

don't have open window or bind events; re-open document , stuff text in there.

well, here again. above technique either stopped working or tripping when said ever worked @ all. chrome, in particular, doesn't seem have document.open defined.

but! found nifty technique seems work everywhere:

errtext = 'data:text/html;base64,' + window.btoa(jqxhr.responsetext); window.open(errtext, '_self');

this converts response self-contained data: url , opens in window.

try this: 

var win = window.open('', '_self'); win.document.getelementsbytagname('body')[0].innertext = jqxhr.responsetext;

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