title: Regex pattern to match at least 1 number and 1 character in a string
body: <p>I have a regex </p>
  
  <blockquote>
    <p><code>/^([a-zA-Z0-9]+)$/</code></p>
  </blockquote>
  
  <p>this just allows only alphanumerics but also if I insert only number(s) or only character(s) then also it accepts it. I want it to work like the field should accept only alphanumeric values but the value must contain at least both 1 character and 1 number.</p>