I tried a regular expression to validate a number with or without decimal with maximum 2 places. I did this var patt= /(^\d+[.]?\d{1,2}+$)/g; It is working in RegExr application. but in chrome there is an error SyntaxError: Invalid regular expression: /(^\d+[.]?\d{1,2}+$)/: Nothing to repeat what wrong am I doing in this? Please help.Thanks.