So it will be good if we see how to do it using JavaScript. Using this script we can validate the phone number.Above is the live demo we can check by entering the alphabets and also numbers. JavaScript regular expression to validate U.S phone number. An USA phone number has ten digits, it comprises of : a three digit area code, subscriber number of seven digit. The idea behind this code is to make it as simple as possible for the user to correctly enter their phone number in the correct format. Here let's see the validation for the phone number using simple javascript.Here is the script for the validation phoneno = /^\d{10}$/ . JavaScript Form Validation: Phone Numbers. Example: JavaScript Form Validation: Phone Numbers CSS Script Best Free JavaScript & … Validating a 10 Digit Phone Number with JavaScript Test form - Enter any valid 10 digit phone number in any format. The DataAnnotations namespace provides two ways of validating a telephone numbers as a data type, enumeration and derived class. Phone number validation in System.Component.DataAnnotations. The area code may have a parentheses around the area code, and dashes or spaces seperating the numbers in the subscriber number. This javaScript code determine whether a user entered phone number in a common format that includes 0999999999, 099-999-999, (099)-999-9999, (099)9999999, 099 999 9999, 099 999-9999, (099) 999-9999, 099.999.9999 and all related combinations Continuing with our JavaScript regular expression series today we will discuss . Previously we talked about validating email , Social Security number and zip code using JS regex. We are going to check if the value of the phone input field is a valid phone number or not when the form is going to be submitted. Phone number validation is often used in web. Enumeration Format Use the enumeration method when your phone number field is a simple type and use the derived class when the field is an object type. Here is a html code that accepts number from the user and check whether the entered value is valid. Sometimes situations arise (input a phone number, zip code or credit card number) when the user should fill a single or more than one fields with numbers (0-9) in an HTML form. ... //Validate phone number for 10 digit US numbers. simple javascript validation for register number . Number validation in JavaScript Last Updated: 14-08-2020 Sometimes the data entered into a text field needs to be in the right format and must be of a particular type in order to effectively use the form. JavaScript Tutorial – Phone Number Validation, Check digits and minimum length. To validate phone number from text type input field we are going to use jQuery. 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