agent-smith.js

## agent-smith.js
// agent-smith.js

/**
 * Receive shared array buffer in this worker.
 */
onmessage = (message) => {
  // Worker's view of the shared data.
  let heapArray = new Int32Array(message.data);

  let indexToModify = 1;
  heapArray[indexToModify] = 100;

  // Send the index as a message back.
  postMessage(indexToModify);
};

## index.html
<!DOCTYPE html>
<html>
<head>
  <title>Agents example</title>
</head>
<body>

<!--
  NOTE: if you run this example locally, run it in Firefox,
  since Chrome due to security reasons doesn't allow loading
  web workers from a local file.
-->

<script type="text/javascript">
  // Shared data between this agent, and another worker.
  let sharedHeap = new SharedArrayBuffer(16);

  // Our view of the data.
  let heapArray = new Int32Array(sharedHeap);

  // Create a new agent (worker).
  let agentSmith = new Worker('agent-smith.js');

  agentSmith.onmessage = (message) => {
    // Agent sends the index of the data it modified.
    let modifiedIndex = message.data;

    // Check the data is modified:
    console.log(heapArray[modifiedIndex]); // 100
  };

  // Send the shared data to the agent.
  agentSmith.postMessage(sharedHeap);

</script>

</body>
</html>