title: How to zoom multiple canvas simultaneously in html5?
body: <p>I am working in a html5 project. In which i am drawing multiple shapes (e.g. line, rectangle,circle etc) as an individual canvas.</p>
  
  <p>In brief, i have a canvas on which my document is loaded and when i am drawing any shape i am making a new canvas for that particular drawing. But i am in a problem to zoom drawings because we have HTML5 method to zoom a drawing inside a canvas.</p>
  
  <p>i.e. </p>
  
  <pre><code>ctx.scale(zoom_value,zoom_Value);
  </code></pre>
  
  <p>I want to zoom drawing with canvas also.</p>
  
  <p>Thanks in advance.</p>