To correct myself: "Due to the way the && expression is evaluated, if any tests returns *false* the subsequent tests are not executed."
This is because the && operator uses short-circuit evaluation. If any of the tests return false then the whole expression must be false, so the subsequent tests are not evaluated. The & operator does not use short-circuit evaluation so all tests are evaluated. This only affects the Javascript validation tests - the server validations are always all run. Steve > -----Original Message----- > From: Brian Alexander Lee [mailto:[EMAIL PROTECTED] > Sent: July 27, 2003 6:34 AM > To: Struts Users Mailing List; [EMAIL PROTECTED] > Subject: Re: Can Validator javascript show more than one error at a > time? > > > There's currently a defect > (http://issues.apache.org/bugzilla/show_bug.cgi?id=20754) > in bugzilla that would use "&" (bitwise operator) instead of "&&" so it > would process all validations. > > You can apply the patch yourself. It's only two files ValidatorPlugIn.java > and JavascriptValidatorTag.java. > > BAL > ----- Original Message ----- > From: "Steve Raeburn" <[EMAIL PROTECTED]> > To: "Struts Users Mailing List" <[EMAIL PROTECTED]> > Sent: Saturday, July 26, 2003 2:33 PM > Subject: RE: Can Validator javascript show more than one error at a time? > > > > The generated Javascript groups tests by type (required, mask, > min length > > etc) and calls them as follows: > > > > function validateRegistrationForm(form) { > > if (bCancel) > > return true; > > else > > return validateRequired(form) && > > validateMask(form) && > > validateMinLength(form) && > > validateMaxLength(form) && > > validateEmail(form); > > } > > > > Due to the way the && expression is evaluated, if any test returns true > the > > subsequent tests are not executed. > > > > If you had several missing required fields then those errors would be > > grouped together. But if you had only one missing required field and > another > > type of error, you would not see the second error message until you > correct > > the missing field error. > > > > See the struts-validator sample application (shipped with Struts) for > > examples. > > > > Steve > > > > > -----Original Message----- > > > From: news [mailto:[EMAIL PROTECTED] Behalf Of Brian Chaplin > > > Sent: July 26, 2003 10:35 AM > > > To: [EMAIL PROTECTED] > > > Subject: Can Validator javascript show more than one error at a time? > > > > > > > > > Somehow Ted Husted was able to get the javascript to show > more than one > > > error at a time in the javascript alert message. > > > See screen shot on page 373 of Struts in Action. > > > I'm using Struts 1.1 final and it seems the javascript won't support > that? > > > > > > > > > > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
