Created
January 18, 2022 05:58
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US Phone Validation using regex Reactjs
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import { useState } from "react" | |
export default function Index(){ | |
const [phone,setPhone] = useState(""); | |
const formatPhoneValidation = (current) => { | |
const value = `${current.value}`; | |
const input = value.replace(/\D/g, "").substring(0, 10); // First ten digits of input only | |
const areaCode = input.substring(0, 3); | |
const middle = input.substring(3, 6); | |
const last = input.substring(6, 10); | |
if (input.length > 6) { | |
setPhone(`(${areaCode}) ${middle} - ${last}`); | |
} else if (input.length > 3) { | |
setPhone((p) => (`(${areaCode}) ${middle}`); | |
} else if (input.length > 0) { | |
const updatedVal = `(${areaCode})`; | |
setPhone(updatedVal); | |
const strLength = updatedVal.length; | |
if (phoneRef.current.setSelectionRange !== undefined) { | |
const end = strLength > 0 ? strLength - 1 : strLength; | |
phoneRef.current.setSelectionRange(strLength, end); | |
} | |
} else { | |
setPhone(""); | |
} | |
}; | |
const onPhoneFieldClick = (e) => { | |
const elem = e.currentTarget; | |
const input = elem.value.replace(/\D/g, "").substring(0, 10); | |
if (input.length > 3) { | |
return null; | |
} | |
setTimeout( | |
(function (el) { | |
const strLength = el.value.length; | |
return function () { | |
if (el.setSelectionRange !== undefined) { | |
const end = strLength > 0 ? strLength - 1 : strLength; | |
el.setSelectionRange(strLength, end); | |
} | |
}; | |
})(elem), | |
5 | |
); | |
}; | |
return( | |
<input type="text" value={phone} onChange={formatPhoneValidation} onClick={onPhoneFieldClick} placeholder="(123) 456 7890" /> | |
) | |
} |
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