I am having an issue with a RangeValidator control giving an javascript error.  This does not occur all the time, but I am guessing only when a control name is formatted in a certain way. 

Here is an example of a page I am having trouble with.

http://www.creativememories.com/MainMenu/Our-products-and-services/Traditional-Scrapbooking/Albums---NEW-Sizes!/8x8-Albums---NEW-Sizes/8x8-Coversets/8-x-8-Coverset-Ruby

Offending line 

 1    var 8_X_8_Coverset_Cobalt_ProductCatalogUserControl_ctl00_ProductCartControl_QuantityI18NRangeValidator = document.all ? document.all["8_X_8_Coverset_Cobalt_ProductCatalogUserControl_ctl00_ProductCartControl_QuantityI18NRangeValidator"] : document.getElementById("8_X_8_Coverset_Cobalt_ProductCatalogUserControl_ctl00_ProductCartControl_QuantityI18NRangeValidator");

Similar line on another page with no issues.
2    good var PicFolio™_Max_Album_Blue_12_x_12_ProductCatalogUserControl_ctl00_ProductCartControl_QuantityI18NRangeValidator = document.all ? document.all["PicFolio™_Max_Album_Blue_12_x_12_ProductCatalogUserControl_ctl00_ProductCartControl_QuantityI18NRangeValidator"] : document.getElementById("PicFolio™_Max_Album_Blue_12_x_12_ProductCatalogUserControl_ctl00_ProductCartControl_QuantityI18NRangeValidator");

any help is greatly appreciated

 Hi,

In javascript, variables name cannot start with numbers, so var 8x8.... will return an error and var _8x8... will work fine.

If you are dynamically generating the javascript var name then append the '_' char at the name beginning and all var names will be valid.

Thanks so much for the note. This was exactaly my problem. 

 To fix this I created a regular expression to remove all inalid javascript errors from my control name.  Also used regex if there is a number at the begining of the control I put in an underscore.

This saved me a ton of research time.