html运行实例（js_arrow_function

代码示例：（标识：js_arrow_function_2）

<!DOCTYPE html>
<html>
<body>

<h2>JavaScript 箭头函数</h2>

<p>此例展示了箭头函数的语法以及如何使用它。</p>

<p id="demo"></p>

<script>
var hello;

hello = () => {
  return "Hello World!";
}

document.getElementById("demo").innerHTML = hello();
</script>

</body>
</html>