26159 2014-06-21 08:11:38 +0000 request: caller's line number, filename, function name to assist in debugging 2014-06-21 12:54:52 +0000 1 1 1 Unclassified WHATWG JavaScript unspecified PC Windows NT RESOLVED INVALID P2 enhancement Unsorted 1 jmichae3 mathias mike sideshowbarker+javascript oldest_to_newest 108155 0 jmichae3 2014-06-21 08:11:38 +0000 it would be nice if somehow js could let me know what line number and file from the caller caused the problem. it would make my debugging tremendously easier. I think it would help a lot of people who develop web pages. something like this could be a predefined variable of some kind. thanks. this could mean examining the previous item on the call stack I suppose. the idea is that, within the function call, I could maybe have access to the caller's function name, filename, and line number within the called function somehow. as things are now, some debugger messages are pretty incomprehensible. I get messages about scripts I did not include on my site, and error messages I don't understand because they are specific to some package somewhere (and not documented well). having these 3 pieces of information allows them, and me, to write my libraries in a way that helps the web programmer/designer fix problems without head scratching, they can get the error message form the console.log with the offending line# from the specific file they wrote, and jump right to it and fix the problem. it's a time saver. 108156 1 jmichae3 2014-06-21 08:12:05 +0000 change to enhancement. 108161 2 jmichae3 2014-06-21 08:31:03 +0000 RE: comment 1 where it says "the idea is that, within the function call, I could maybe have access to the caller's function name, filename, and line number within the called function somehow." could be rewritten more clearly as "the idea is that, within the callee (the function called), I could have access to the caller's function name, filename, and line number within the called function somehow." example: let's say in my file abc.html I am using the library xyz.js <script src="/xyz.js"></script> <script> var x=xyz("123",5); </script> within xyz(), it could console.log() line 20 in file abc.html (or some other case may be that something is being called within a js file) and the calling function is an empty string since there is no parent. 108180 3 mathias 2014-06-21 12:54:52 +0000 This is outside the scope of the JavaScript / Web ECMAScript spec. See <http://javascript.spec.whatwg.org/#goals>. To propose new features to the ECMAScript language, please file a bug on https://bugs.ecmascript.org/.