I want to validate this string "B3:D7,0 H3:J7,0 B9:L27,1 B29:L48,2 B50:L56,2" using pattern but it doesn't match. I don't know what error there is in the regex string.
I used pattern="[A-Z][0-99]+:[A-Z][0-99]+,[0-9]+" inside textfield in html
3 Answers
Forgot ( and )+ around your pattern:
pattern="([A-Z][0-9]+:[A-Z][0-9]+,[0-9]+)+"
or
pattern="([A-Z][0-9]+:[A-Z][0-9]+,[0-9])+"
if the last digit may occour only once.
Comments
You can try the below pattern:
([A-Z][0-9]+\:[A-Z][0-9]+,[0-9]\s?){5}
Comments
To match a digit 0-9 you can use [0-9] or \d
Assuming you don't want spaces at the start and at the end, you can repeat the pattern 1 or more times preceded by a space.
^[A-Z]\d+:[A-Z]\d+,\d+(?: [A-Z]\d+:[A-Z]\d+,\d+)+$
^Start of string[A-Z]\d+:[A-Z]\d+,\d+Match:between a char A-Z and 1+ digits followed by,and 1+ digits(?: [A-Z]\d+:[A-Z]\d+,\d+)+Repeat 1+ times the same pattern with a space preceded.$End of string
Using the pattern attribute, you can omit the start and end anchors as they are already implied.
pattern="[A-Z]\d+:[A-Z]\d+,\d+(?: [A-Z]\d+:[A-Z]\d+,\d+)+"
Note that if you want to match a digit 1-99 you can use [1-9]\d?
2 Comments
Hemil Shah
Works for "B3:D7,0 H3:J7,0 B9:L27,1 B29:L48,2 B50:L56,2" but doesn't work for string like "A1:X30,2"
The fourth bird
@HemilShah Then you can use
^[A-Z]\d+:[A-Z]\d+,\d+(?: [A-Z]\d+:[A-Z]\d+,\d+)*$ with * as a quantifier for 0 or more times. See regex101.com/r/sMjQWJ/1
[0-99]is the same as[0-9].