title: want to show number one by one after a second through interval
body: <p>i want to show numbers one by one after a second, but below coding shows the whole numbers together.</p>
  
  <pre><code>function showVal(){
      for(i=0; i&lt;5; i++)
      {
          var showingVal= document.write("the number is "+i);
          document.write("&lt;br /&gt;");       
      }
  }
  setInterval('showVal()',1000);
  </code></pre>