title: Regular expression range with decimal 0.1 to 1
body: <p>I' am using following regex:</p>
  <pre><code>/^(?:1|0?\.\d)$/ 
  </code></pre>
  <p>I need range between 0.1 and 1 with each number before and after dot. For example:</p>
  <pre><code>0.1 valid
  1 valid
  0.111 not valid
  011.2 not valid
  </code></pre>
  <p>Valid numbers are [0.1-0.9] and 1</p>