javascript regular expression for alphanumeric

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Mattia
24 Jul 2020
1/^[a-z0-9]+$/i
2
3^         Start of string
4[a-z0-9]  a or b or c or ... z or 0 or 1 or ... 9
5+         one or more times (change to * to allow empty string)
6$         end of string    
7/i        case-insensitive
8
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