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JavaScript Regular Expressions in JavaScript Regular Expressions Matching Character Ranges

Julio Akiyama
Julio Akiyama
9,068 Points
Posted by Julio Akiyama
Julio Akiyama
9,068 Points

Is it correct?

[0-9]{4} [A-Za-z]{5}
8345 Gable
7238 Gable
2349 Table
8475 Cable
0994 Fable
1047 Zable

[0-9]{4}[0-9]?
4849
4472
4901
40502
43470
40496

It worked, but is it the correct way to do so? Thank you!

1 Answer

Per Schrijver
Per Schrijver
3,435 Points

I would chane "[0-9]{4}[0-9]?" to "\d{4,5}" and "[0-9]{4} [A-Za-z]{5}" would become "\d{4} [A-Za-z]{5}". Good luck!

Per Schrijver
Per Schrijver
3,435 Points

Keep in mind: [0-9] is not always equivalent to \d. In python3, [0-9] matches only 0123456789 characters, while \d matches [0-9] and other digit characters, for example Eastern Arabic numerals ٠١٢٣٤٥٦٧٨٩.