JS how to convert to string the Error Object from the window.error?

Question

I implemented:

 window.onerror = function (m, s, l, c, e) {
 }

Where the e is the Error Object. For example, it contains:

ReferenceError: rde is not defined
    at Object.bla.cs (domain.pt/bla.js:418:17)
    at n.aanv (domain.pt/bla.js:125:29)

If i make e.toString(), only the first line is returned. How to get the 3 lines? Thank you.

I also tried this: e.toString().replace(/(\r\n|\n|\r)/gm,"") without success — user1774309, Jun 02 '16 at 12:47
`foreach(p in e){ console.log( e[p] ); }` or `JSON.stringify(e);` could help? Check [this answer](http://stackoverflow.com/questions/5612787/converting-an-object-to-a-string#answer-5612876). — skobaljic, Jun 02 '16 at 12:48

score 20 · Answer 1 · answered Jun 02 '16 at 13:07

20

Error object have a .message property containing the full message (no need for .toString(). There is also .stack but it's not a standardized property.

answered Jun 02 '16 at 13:07

Kulvar

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score 12 · Accepted Answer · answered Jun 02 '16 at 12:54

12

It seems that the Error Object has a property called stack. so, e.stack is the full text of the error.

answered Jun 02 '16 at 12:54

user1774309

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Error.stack is not part of spec. It's present in most browsers, but not edge, and should not be relied on. – ckersch Apr 15 '19 at 23:02

JS how to convert to string the Error Object from the window.error?

2 Answers2