Question

I get the following error and iPad but not in desktop browsers:

JavaScript: Error
undefined
TypeError: 'undefined' is not a function

This is a larger js application, and this error message is totally unhelpful. Is there any way I can get the line number of the error or anymore information?

Update: This just got funky.

line : 0    
page : undefined
desc : TypeError: 'undefined' is not a function
chr  : undefined

Did the user agent spoofing in FF and safari. No error.

Answer 1

You could try registering a custom error handler to window.onerror

window.onerror = function (desc,page,line,chr)
{ alert('Line:'+line); }

desc = Error message
page = File/Page where the error occured
line = Well…
chr = Character position of the error in the line