title: simple way to make 3.2242143 to 3.2 using jquery
body: <p>i have many data like this :</p>
  
  <pre><code>3.23214215
  </code></pre>
  
  <p>but i want to use the <code>3.2</code> part ,</p>
  
  <p>what can i do  using jquery ,</p>
  
  <p>thanks</p>