如何获取在javascript中加载的javascript文件名？

Question

Suppose I have a HTML file. In that file, I am referencing two external javascript files. Among those, one javascript file has error in it (mostly compilation errors). And I have written onerror method in another javascript file which does not have any error. Now when I open the HTML file in browser, obviously onerror will be called. The contents in that method will be executed. Here my actual thought, I would like to print javascript file name which has error in it in an alert(-) placed inside onerror method of another javascript file.

If I put arguments.callee statement inside alert(-) , then it is printing current onerror method content. If i put arguments.callee.caller , then it is printing null.

Is there any way to find file name of javascript loaded which has errors in it through programatically, specially in javascript?

Answer 1

This question is pretty well answered in https://developer.mozilla.org/de/docs/Web/API/GlobalEventHandlers/onerror . Especially look at this:

funcRef is a reference to a function. When the function returns true, this prevents the firing of the default event handler. Function parameters:

 Error message (string) URL of the script where the error was raised (string) Line number where error was raised (number) Column number for the line where the error occurred (number) Error Object (object) 

This results in:

window.onerror(msg, URL, line, col, e) {

       alert("Error in " + URL + " at " + line + "/" + col);

}

I recommend to not use alert for showing script errors but the console object.