title: What is the difference between =+ and +=
body: <p>What is the difference between the two notations :</p>
  
  <pre><code>encryText =+ text;
  </code></pre>
  
  <p>and</p>
  
  <pre><code>encryText += text;
  </code></pre>
  
  <p><em>Note : encryText and text are both strings</em></p>