title: javascript string to object
body: <p>How to apply string object value to a variable
  Ex.</p>
  
  <pre><code>var str='{a:"www"}'
  </code></pre>
  
  <p>Now how to set</p>
  
  <pre><code>var obj={a:"www"}
  </code></pre>
  
  <p>I try eval() but not working</p>