title: Regex for english characters, hyphen and underscore
body: <p>I need Regex for english characters, hyphen and underscore</p>
  
  <p>Example </p>
  
  <p>Match : </p>
  
  <pre>
  govind-malviya
  govind_malviya
  govind123
  govind
  </pre>
  
  <p>Not Match</p>
  
  <pre>
  govind malviya
  govind.malviya
  govind%malviya
  腕錶生活
  вкусно-же
  </pre>