Clear

We clear the graph from Ogma after 1 second.
          <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <script src="../build/ogma.min.js"></script>
  <style>
    #graph-container { top: 0; bottom: 0; left: 0; right: 0; position: absolute; margin: 0; overflow: hidden; }
    .info {
      position: absolute;
      color: #fff;
      background: #141229;
      font-size: 12px;
      font-family: monospace;
      padding: 5px;
    }
    .info.n { top: 0; left: 0; }
    .info.e { top: 20px; left: 0; }
  </style>
</head>
<body>
  <div id="graph-container"></div>
  <div id="n" class="info n"></div>
  <div id="e" class="info e"></div>

<script>
'use strict';

var ogma = new Ogma({
  container: 'graph-container',
  graph: {
    nodes: [
      {id: 'n0', attributes: {x: 0, y: 0 }},
      {id: 'n1', attributes: {x: 50, y: 50 }}
    ],
    edges: [
      {id:'e0', source:'n0', target:'n1'}
    ]
  }
});

// Remove the nodes and the edge after 1s
setTimeout(function() {
  ogma.clearGraph();
  setInfo();
}, 1000);

function setInfo() {
  document.getElementById('n').textContent = 'nodes: ' + ogma.getNodes().size;
  document.getElementById('e').textContent = 'edges: ' + ogma.getEdges().size;
}
setInfo();
</script>
</body>
</html>