Load Stage with JSON String

To deserialize a JSON string with Konva, we can use the Konva.Node.create()
method which creates a node from a JSON string. If we want to deserialize
a stage node, we can also pass in an optional container parameter.

That methods works for very small apps. For more complex cases take a look into Complex Load or even better to Best Practices

Konva Simple Load Demoview raw

<!DOCTYPE html>
<html>
  <head>
    <script src="https://unpkg.com/konva@4.0.18/konva.min.js"></script>
    <meta charset="utf-8" />
    <title>Konva Simple Load Demo</title>
    <style>
      body {
        margin: 0;
        padding: 0;
        overflow: hidden;
        background-color: #f0f0f0;
      }
    </style>
  </head>
  <body>
    <div id="container"></div>
    <script>
      var json =
        '{"attrs":{"width":578,"height":200},"className":"Stage","children":[{"attrs":{},"className":"Layer","children":[{"attrs":{"x":100,"y":100,"sides":6,"radius":70,"fill":"red","stroke":"black","strokeWidth":4},"className":"RegularPolygon"}]}]}';

      // create node using json string
      var stage = Konva.Node.create(json, 'container');
    </script>
  </body>
</html>