I need a validation expression to make sure that a user only enter either whole numbers like 1,56,34 etc or decimal numbers up to 1 decimal place like 0.8,1.5,2.7,9.9 etc
I've tried /d[0-9]+ and other variants and still can't get it right.Any website where i can go to in order to see all the various validation expressions available and their syntax usage?