How can i match a expression in which first three characters are alphabets followed by a "-" and than 2 alphabets.
For eg. ABC-XY
Thanks in advance.
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That very sentence pretty much spells out the answer for you.... if you know regexes at all.mpen– mpen2009-11-19 06:33:36 +00:00Commented Nov 19, 2009 at 6:33
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4 Answers
If you want only to test if the string matchs the pattern, use the test method:
function isValid(input) {
return /^[A-Z]{3}-[A-Z]{2}$/.test(input);
}
isValid("ABC-XY"); // true
isValid("ABCD-XY"); // false
Basically the /^[A-Z]{3}-[A-Z]{2}$/ RegExp looks for:
- The beginning of the string
^ - Three uppercase letters
[A-Z]{3} - A dash literally
- - Two more uppercase letters
[A-Z]{2} - And the end of the string
$
If you want to match alphanumeric characters, you can use \w instead of [A-Z].
Resources:
answered Nov 19, 2009 at 6:28
Christian C. Salvadó
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[A-Z]{3}-[A-Z]{2}
if you also want to allow lowercase, change A-Z to A-Za-z.
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/^[a-zA-Z]{3}-[a-zA-Z]{2}$/
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/\w{3}-\w{2}/.test("ABC-XY")
true
it will match A-Za-z_ though.
