CODEWITHSUNDEEP
regexnumbersdecimal-point
Christian Findlay
Christian Findlay

Reputation: 7682

RegEx - Decimal With a Precision of 2 Or Malformed Number

I need a RegEx pattern that will match on a valid decimal number string with two decimal places, or a malformed number only if the malformed number is an integer with a decimal place at the end.

This is a good discussion on achieving a match on two decimal places

Simple regular expression for a decimal with a precision of 2

But, I need these following strings to match:

Match:

Not Matched:

FYI: This is for masking an input field so that the user can enter any two digit number. The problem currently is that the field rejects the decimal place because it doesn't recognize it as a decimal number unless the user hits the left button to take the cursor back a character and then presses the decimal point key.

Upvotes: 2

Views: 1532

Answers (1)

Gurmanjot Singh
Gurmanjot Singh

Reputation: 10360

Try this Regex:

^\d+(?:\.\d{0,2})?$

Click for Demo

Explanation:

  • ^ - start of the string
  • \d+ - matches 1+ digits
  • (?:\.\d{0,2})? - matches a decimal followed by 0 to 2 digits. ? makes this whole part optional so as to allow the Integers too.
  • $ - End of the String

Upvotes: 2

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