On Feb 23, 2:43 pm, laxeraend <[email protected]> wrote:
> On Feb 23, 10:31 am, John J Barton <[email protected]>
> wrote:
>
>
>
> > On Feb 22, 9:03 pm, laxeraend <[email protected]> wrote:
>
> > > On Feb 22, 8:26 pm, John J Barton <[email protected]> wrote:
>
> > > > When you see the error message in the console, click on the link on
> > > > the far right side.
> > > > It takes you to the source line of the throw. Right click and enter a
> > > > JS expression to restrict the breakpoint.
>
> > > This will work for basic stuff, like something is null, but there are
> > > exceptions whose generation can not be tested for with an expression,
> > > or you don't know what to test for and are trying to break to figure
> > > it out (e.g  exceptions from the JS engine itself or DOM. So it would
> > > still be useful be able to break on a throw (with filters on the
> > > exception and location)
>
> > It would be helpful if you gave a concrete example so we can
> > understand.
>
> When an exception is thrown from opaque (non js) code that you can't
> examine and see the precise conditions that caused the throw, you want
> to break first, then investigate interactively, that's what a debugger
> is for.  Your are suggesting that one should investigate first, come
> up with an expression that perfectly predicts the exception, and only
> then break.  By the time you do that, you don't need to break any
> more, you've already solved the problem.

No, I am suggesting that you give us a specific concrete example so we
can understand the situation you experience. I can't improve the
debugger for you if I don't know what cases cause you trouble.

jjb

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