I want to avoid characters like "^+%&/!'&(" in the textbox(decimal). What is the correct regular expression?
For instance:
Valid: 1,3 or 1,34 or 1
İnvalid: ^4,^' or %2,4 or !!
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http://stackoverflow.com/questions/968825/regular-expression-for-decimal-number?rq=1 – Daniel Möller May 03 '13 at 17:33
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Do you want to allow things like "1.2.4"? – Ted Hopp May 03 '13 at 17:33
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1What have you tried ? This sounds more like a request for someone to code it for you, not a question. – tnw May 03 '13 at 17:33
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How about input type=number ? – adeneo May 03 '13 at 17:34
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@adeneo still lets you enter in non numbers. – epascarello May 03 '13 at 17:35
1 Answers
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You could try
(\d+[.,])?\d+
This means zero or more digits followed optionally by a decimal point, and then one or more digits.
Edit: Updated to include commas and at least one decimal before the decimal point if the decimal point is present
CorrugatedAir
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1This should be `\d*[.,]?\d+` to allow for a comma as the decimal separator (as OP wants). – Ted Hopp May 03 '13 at 17:37