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<!DOCTYPE html>
<html>
<body>
<h1>JavaScript async / await</h1>
<p id="demo"></p>
<script>
function myDisplayer(some) {
  document.getElementById("demo").innerHTML = some;
}
async function myFunction() {return "Hello";}
myFunction().then(
  function(value) {myDisplayer(value);},
  function(error) {myDisplayer(error);}
);</script>
</body>
</html>