title: How to increment a numeric string by +1 with Javascript/jQuery
body: <p>I have the following variable:</p>
  
  <pre><code>pageID = 7
  </code></pre>
  
  <p>I'd like to increment this number on a link:</p>
  
  <pre><code>$('#arrowRight').attr('href', 'page.html?='+pageID);
  </code></pre>
  
  <p>So this outputs 7, I'd like to append the link to say 8. But if I add +1:</p>
  
  <blockquote>
    <p>$('#arrowRight').attr('href', 'page.html?='+pageID+1);</p>
  </blockquote>
  
  <p>I get the following output: 1.html?=71 instead of 8.</p>
  
  <p>How can I increment this number to be pageID+1?</p>