What will be the best regular expression if I want to intake alphanumerics, ‘-‘ and ‘+’ signs.
e.g. LA2+4 or td1-23
What will be the best regular expression if I want to intake alphanumerics, ‘-‘
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What will be the best regular expression if I want to intake alphanumerics, ‘-‘ and ‘+’ signs.
e.g. LA2+4 or td1-23
No magic involved, just specify that your complete string (
^...$) must match a sequence of arbitrary length (...*) of alternatively ([...]) upper-case letters (A-Z), lower-case letters (a-z), digits (0-9), the plus sign (+) and the minus sign (-).The only special case to consider is the fact that the minus sign you want to accept (
-) must appear as the last (or first) letter in the option group, since the same character is also used to specify ranges (as inA-Z).So, the solution is: