Edit fiddle - JSFiddle - React, Tailwind, and code Playground

JSFiddle - React, Tailwind, and code Playground

JavaScript

var expr = /^((00|\+)39[\. ]??)??3\d{2}[\. ]??\d{6,7}$/,
    numero1 = '00393926819578',
    numero2 = '0309883011';

$('body').
    append("<p>" + numero1 + (expr.test(numero1) ? ' Ok' : ' Ko') + "</p>").
    append("<p>" + numero2 + (expr.test(numero2) ? ' Ok' : ' Ko') + "</p>");

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JSFiddle - React, Tailwind, and code Playground

JavaScript

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Use pre-released features

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