JSFiddle - React, Tailwind, and code Playground
JavaScript
var expresion = /(?=(\d{3}[0-9a-zA-Z])){8,30}$/g;
expresion = /([0-9a-zA-Z\_\\])\1{3,}/;
var texto = "*14324";
alert(expresion.test(texto));
var expresion = /(?=(\d{3}[0-9a-zA-Z])){8,30}$/g;
expresion = /([0-9a-zA-Z\_\\])\1{3,}/;
var texto = "*14324";
alert(expresion.test(texto));