title: uncheck checkbox programmatically in reactjs
body: <p>I am messing with checkboxes and I want to know that is there a way in which I can uncheck a checkbox on click of a button by calling a function?? If so? How can I do that?</p>
  
  <pre><code>&lt;input type="checkbox" className="checkbox"/&gt;
  &lt;button onClick={()=&gt;this.unCheck()}
  </code></pre>
  
  <p>How can I uncheck the checkbox programmatically and what if I have multiple checkboxes generated dynamically using map function.
  How can I uncheck them If I want to?</p>