Display of Ajax-Validation-Errors may fail on Internet Explorer
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Key: WW-3295
URL: https://issues.apache.org/struts/browse/WW-3295
Project: Struts 2
Issue Type: Bug
Components: Other
Affects Versions: 2.1.6
Reporter: Wolfgang Schröder
I'm using prototype.js together with the ajax-validation-interceptor and the
"built-in" StrutsUtils-JavaScript. The validation itself works perfect for
both, Firefox and IE. When it comes to displaying the errormessages per field,
I'm using the "built-in" JavaScript-Utilities /struts/utils.js and
/struts/css_xhtml/validation.js
When the ajax-validation returns I'm calling
StrutsUtils.showValidationErrors(form, errorsObject); which fails on IE with a
JavaScript-Alert (one per validation/fielderror) showing "An exception
occurred: Error. Error message: Illegal argument but not on Firefox.
I drilled into the problem and found, that the variable 'firstCtrNode' is
undefined (in both, IE and Firefox). This causes a problem in the call
'enclosingDiv.insertBefore(errorDiv, firstCtrNode);'
IE and Firefox are showing different behaviour. Firefox always insists on a two
arg call, even if the second arg is null. IE throws an exception when the
second arg is null and only accepts a call with one arg.
Code from /struts/css_xhtml/validation.js, from Line 94 on:
var firstCtrNode = findWWCtrlNode(enclosingDiv); // either wwctrl_ or
wwlbl_
var error = document.createTextNode(errorText);
var errorDiv = document.createElement("div");
errorDiv.setAttribute("class", "errorMessage");//standard way.. works
for ie mozilla
errorDiv.setAttribute("className", "errorMessage");//ie hack cause ie
does not support setAttribute
errorDiv.setAttribute("errorFor", elem.id);
errorDiv.appendChild(error);
enclosingDiv.insertBefore(errorDiv, firstCtrNode); // <---- This line
fails on IE
My bugfix/workaround is:
if(!firstCtrNode && navigator.appName == 'Microsoft Internet Explorer')
enclosingDiv.insertBefore(errorDiv);
else
enclosingDiv.insertBefore(errorDiv, firstCtrNode);
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