<html>
<body>
<p>将数组中的每个元素乘以 10:</p>
<p id="demo"></p>
<script>
var numbers = [65, 44, 12, 4];
var newarray = numbers.map(myFunction)
function myFunction(num) {
return num * 10;
}
document.getElementById("demo").innerHTML = newarray;
</script>
</body>
</html>