Re: try ... catch for a specific error ?

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From	"Christoph M. Becker" <cmbecker69@arcor.de>
Newsgroups	comp.lang.javascript
Subject	Re: try ... catch for a specific error ?
Date	Thu, 2 Jun 2016 12:38:07 +0200
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On 02.06.2016 at 09:54, R.Wieser wrote:

> I'm executing a command which can return a specific error constant
> indicating the item is not found.  I would like to catch that error alone
> (returning an empty string instead of failing), and have the system handle
> all others.
> 
> Two seperate questions:
> 1) Can I tell the "catch" to only do so on (a) specific error(s) ?

You can do something like:

  try {
      // ...
  } catch (ex) {
      if (weAreInterestedInHandlingTheException(ex)) {
          // handle the exception
      } else {
          throw ex;
      }
  }

-- 
Christoph M. Becker

Thread

try ... catch for a specific error ? "R.Wieser" <address@not.available> - 2016-06-02 09:54 +0200
  Re: try ... catch for a specific error ? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-06-02 11:21 +0200
    Re: try ... catch for a specific error ? "R.Wieser" <address@not.available> - 2016-06-02 12:18 +0200
      Re: try ... catch for a specific error ? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-06-02 13:22 +0200
  Re: try ... catch for a specific error ? "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-06-02 12:38 +0200
    Re: try ... catch for a specific error ? "R.Wieser" <address@not.available> - 2016-06-02 14:32 +0200
      Re: try ... catch for a specific error ? "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-06-02 14:40 +0200
        Re: try ... catch for a specific error ? "R.Wieser" <address@not.available> - 2016-06-02 15:40 +0200
          Re: try ... catch for a specific error ? "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-06-02 16:03 +0200
            Re: try ... catch for a specific error ? "R.Wieser" <address@not.available> - 2016-06-02 16:23 +0200
              Re: try ... catch for a specific error ? "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-06-02 16:43 +0200
              Re: try ... catch for a specific error ? Tim Streater <timstreater@greenbee.net> - 2016-06-02 20:42 +0100
                Re: try ... catch for a specific error ? Tim Streater <timstreater@greenbee.net> - 2016-06-02 20:44 +0100
      Re: try ... catch for a specific error ? JJ <jj4public@vfemail.net> - 2016-06-02 20:24 +0700
        Re: try ... catch for a specific error ? "R.Wieser" <address@not.available> - 2016-06-02 16:35 +0200
          Re: try ... catch for a specific error ? "R.Wieser" <address@not.available> - 2016-06-03 10:50 +0200
            Re: try ... catch for a specific error ? "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-06-03 17:35 +0200
            Re: try ... catch for a specific error ? "R.Wieser" <address@not.available> - 2016-06-03 22:25 +0200
              Re: try ... catch for a specific error ? "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2016-06-03 23:55 +0200

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