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Javascript function for validating phone number

Hi, Does anyone have a cross-browser JS function that validates a US phone number?

I consider the following to be valid phone number formats: var p = "5558675309"; var p = "(312) 123-4567"; var p = "512-234-5678"; Thanks, - Dave Hi, Does anyone have a cross-browser JS function that validates a US phonenumber?

We want to allow only letters, numbers and underscopes.Does anyone have a cross-browser JS function that validates a US phonenumber?I consider the following to be valid phone number formats:var p = "5558675309";var p = "(312) 123-4567";var p = "512-234-5678"; Does that not also accept Canadian ones?validate Username ( ) The function below checks if the user entered anything at all in the username field.If its not blank, we check the length of the string and permit only usernames that are between 5 and 15 characters.Since there is no way of truly validating a number other than trying it and getting an appropriate response, and since great annoyance will be caused if a valid number is not acceptable to your software, I suggest that any string of a reasonable number of digits, with any reasonable separators, should be allowed, perhaps by user override. Formerly, area codes were required and exchanges were prohibited to have 0 or 1 as the 2nd digit, but that restriction was eliminated a few years ago with the advent of 10-digit local dialing.Why not just strip punctuation, strip a leading "1", and see if what youhave left consists of a valid 10-digit number?"Bad data" are already filtered out when input is passed to the server-based program. Client side form validation usually done with javascript.For the majority of your users, Java Script form validation will save a lot of time up front, but double-checking the data on the server remains necessary, in case the user has turned Java Script off.If the required field is blank, we return the error string to the main function.If its not blank, the function returns an empty string.

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