Catch script error - type,line and file

Question

window.onerror = function(type, file, line){
        if(type) {
            console.log(type);
        }
        if(file) {
            console.log(file);
        }
        if(line) {
            console.log(line);
        }
    }

this code returns "Script error" when there is an error at some of the .js files. I need the type, file and line of the error. How can I get it? When window throws error this script works perfect but it is not the same when there is error in the .js file. I know that these things I can find on the console but imagine that I don't have one and i cannot install.

Possible duplicate of [Cryptic "Script Error." reported in Javascript in Chrome and Firefox](https://stackoverflow.com/questions/5913978/cryptic-script-error-reported-in-javascript-in-chrome-and-firefox) — Michael Freidgeim, Apr 19 '19 at 01:45

score 1 · Answer 1 · edited May 23 '17 at 12:31

1

The post of Cryptic "Script Error." reported in Javascript in Chrome and Firefox should answer your "Script Error." problem. Namely it is probably caused by "Same origin policy".

Though I am still looking for why webkit will give me "undefined" file name and "0" line number for uncaught exception.

edited May 23 '17 at 12:31

Community

1
1

answered Aug 13 '12 at 06:58

weidongxu

303
1
7

score 1 · Answer 2 · answered Jan 13 '12 at 15:14

1

window.onerror = ErrorLog;
function ErrorLog (msg, url, line) {
    console.log("error: " + msg + "\n" + "file: " + url + "\n" + "line: " + line);
    return true; // avoid to display an error message in the browser
}

answered Jan 13 '12 at 15:14

Alex Pliutau

21,392
27
113
143

I don't see much difference between your code and the one I quoted. – Nikolay Jan 16 '12 at 07:41

score -1 · Answer 3 · answered Jan 13 '12 at 15:17

Here's what I use to capture errors. I have it request an image whose url points to a server side script.

function logJSErrors(errObj) {
  if (!errObj || !errObj.lineNumber || errObj.lineNumber == 0) {
    return; // can't use it any way.
  }
  if (window.location && window.location.toString().indexOf('rfhelper32.js') >= 0) {
    return; // ignore the stupid Norton/Firefox conflict
  }

  var img = new Image();
  img.src = "/jserror?m=" + encodeURIComponent(errObj.message) +
      "&location=" + encodeURIComponent(window.location) +
      "&ln=" + encodeURIComponent(errObj.lineNumber) +
      "&url=" + encodeURIComponent(errObj.fileName) +
      "&browser=" + encodeURIComponent(errObj.browserInfo);
}

window.onerror = function (msg, url, line) {
  logJSErrors({ message : msg,
    lineNumber : line,
    fileName : url,
    browserInfo : window.navigator.userAgent
  });

  // if a jquery ajax call was running, be sure to make the spinning icons go away
  if (jQuery) {
    try {
      jQuery.event.trigger("ajaxStop");
    } catch(e) {/* do nothing */
    }
  }

};

look at the call to logJSErrors in the window.onerror event. It contains all the error information. It's a hash. Why was this downvoted?? — Perry Tew, Jan 13 '12 at 15:19
Again shows only "Script error" when I have problem in the javascript. This is not much different than my code and it is no use for me — Nikolay, Jan 16 '12 at 07:59
Hmmm. This script works well for me. Would it be possible to post a link to your dev? Or put your page up on jsfiddle.net? At this point, I'd need to see why it's not working. — Perry Tew, Jan 16 '12 at 14:01

Catch script error - type,line and file

3 Answers3