Function isAlphaNum

isAlphaNum(string: string): boolean

Check that a string only consists of alphanumeric characters.

    isAlphaNum("abcdefghijklmnopqrstuvxyz") => true
    isAlphaNum("ABCDEFGHIJKLMNOPQRSTUVXYZ") => true
    isAlphaNum("1234567890")                => true
    isAlphaNum("=")                         => false

Returns

true if it only contains alphanumeric characters.

Parameters

string: string

the string of characters

Returns boolean