JSFiddle - React, Tailwind, and code Playground
JavaScript
var password = "P@ssw0rd";
var validLength = /.{8}/.test(password);
var hasCaps = /[A-Z]/.test(password);
var hasNums = /\d/.test(password);
var hasSpecials = /[~!,@#%&_\$\^\*\?\-]/.test(password);
var isValid = validLength && hasCaps && hasNums && hasSpecials;
alert(isValid);