javascript regex matching 3 digits and 3 letters
How to match word in string that contain exactly "3 digits and 3 letters"?
e.g. 100BLA
var regex = ?;
var string = "word word 100BLA word";
desiredString = string .match(regex);
Answer
\d matches a digit
[a-zA-Z] matches a letter
{3} is the quantifier that matches exactly 3 repetitions
^ Anchor to match the start of the string
$ Anchor to match the end of the string
So if you use all this new knowledge, you will come to a regex like this:
^\d{3}[a-zA-Z]{3}$
Update:
Since the input example has changed after I wrote my answer, here the update:
If your word is part of a larger string, you don't need the anchors ^ and $ instead you have to use word boundaries \b.
\b\d{3}[a-zA-Z]{3}\b