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Posted to dev@tapestry.apache.org by "Jesse Kuhnert (JIRA)" <de...@tapestry.apache.org> on 2007/03/25 05:23:32 UTC

[jira] Updated: (TAPESTRY-1309) clearValidationDecorations in validation.js has huge performance issues with many form elements

     [ https://issues.apache.org/jira/browse/TAPESTRY-1309?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jesse Kuhnert updated TAPESTRY-1309:
------------------------------------

    Fix Version/s: 4.1.2

> clearValidationDecorations in validation.js has huge performance issues with many form elements
> -----------------------------------------------------------------------------------------------
>
>                 Key: TAPESTRY-1309
>                 URL: https://issues.apache.org/jira/browse/TAPESTRY-1309
>             Project: Tapestry
>          Issue Type: Bug
>          Components: JavaScript
>    Affects Versions: 4.1.2
>         Environment: Win IE6, IE7, FF1.5(mac os x) and Safari(mac os x)
>            Reporter: Anna Vo
>             Fix For: 4.1.2
>
>
> In validation.js this method causes performances issues in IE6, IE7, FF1.5(mac) and Safari if you have around 4000 or more checkboxes within the form (in the case of adding and removing category tree nodes). This was not an issue with Tapestry 4.0.2.
>          /**
> 	 * Clears out previous css classes set on fields 
> 	 * in error.
> 	 */
> 	clearValidationDecorations:function(form, props){
> 		for (var i=0; i< form.elements.length; i++) {
> 			if (dj_undef("type", form.elements[i]) || typeof form.elements[i].type == "undefined"
> 				|| form.elements[i].type == "submit" 
> 				|| form.elements[i].type == "hidden") { continue; }
> 			
> 			dojo.html.removeClass(form.elements[i], this.missingClass);
> 			dojo.html.removeClass(form.elements[i], this.invalidClass);
> 		}
> 	},
> The performance issues that we found:
> IE6/7 - browser locks up with hour glass for close to 3 minutes before it hits the listener method
> Safari - browser locks up and eventually quits
> FF (mac) - long running script processing prompt that asks to continue or stop script
> When we commented this method out the performance issues went away. We also tried adding || form.elements[i].type == "checkbox" to the continue statement which worked but was still slower than usability testing allows. 

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