html运行实例（eg_js_array_map

代码示例：（标识：eg_js_array_map_2）

<!DOCTYPE html>
<html>
<body>

<h1>JavaScript Array.map()</h1>

<p>通过对每个数组元素执行函数来创建新数组。</p>

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

<script>
var numbers1 = [45, 4, 9, 16, 25];
var numbers2 = numbers1.map(myFunction);

document.getElementById("demo").innerHTML = numbers2;

function myFunction(value) {
  return value * 2;
}
</script>

</body>
</html>