title: Check if string contains only letters in javascript
body: <p>So I tried this:</p>
  
  <pre><code>if (/^[a-zA-Z]/.test(word)) {
     // code
  }
  </code></pre>
  
  <p>It doesn't accept this : <code>"   "</code></p>
  
  <p>But it does accept this: <code>"word word"</code>, which does contain a space :/</p>
  
  <p>Is there a good way to do this?</p>