function readOnly(count){ }
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write validation rule on text field. IsNumber(textfield__c);
http://boards.developerforce.com/t5/General-Development/check-if-value-is-numeric/td-p/133647
JavaScript, definitely:
http://dl.dropbox.com/u/35146/js/tests/isNumber.html
You can make use pattern and matching class in Apex
Pls refer the link, it might be helpful
http://salesforcesource.blogspot.in/2010/01/utilizing-apex-pattern-and-matcher.html
If it solves your Issue, please mark it as solved so that other can get benefited from this.
write validation rule on text field. IsNumber(textfield__c);
http://boards.developerforce.com/t5/General-Development/check-if-value-is-numeric/td-p/133647
JavaScript, definitely:
http://dl.dropbox.com/u/35146/js/tests/isNumber.html
You can make use pattern and matching class in Apex
Pls refer the link, it might be helpful
http://salesforcesource.blogspot.in/2010/01/utilizing-apex-pattern-and-matcher.html
If it solves your Issue, please mark it as solved so that other can get benefited from this.