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alphanumeric validation

Javascript password validation alphanumeric string

In case you want to allow only alpha-numeric characters in your password, here is the validation to check that condition: Alpha-numeric regular expression test Here is the function to test whether the inut matches an alphanumeric pattern: function validateAlphaNumericPassword(pwd) { var re = /^[a-z0-9]+$/i return re.test(pwd) } Alphanumeric with hyphen Sometimes, you may want to allow some characters like hyphen ( - ) in addition to alpha-numeric characters. Here is the validation

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