菜鸟教程在线编辑器

AI 编程工具
 
                <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
</head>
<body>

<p id="demo">点击按钮截取第三个和第四个元素，使用负数。</p>
<p id="demo2">这里显示截取最后三个元素，使用负数。</p>
<button onclick="myFunction()">点我</button>
<script>
function myFunction(){
	var fruits = ["Banana", "Orange", "Lemon", "Apple", "Mango"];
	var myBest = fruits.slice(-3,-1);
	var myBest2 = fruits.slice(-3);
	var x=document.getElementById("demo");
	x.innerHTML=myBest;
	var x2=document.getElementById("demo2");
	x2.innerHTML=myBest2;
}
</script>

</body>
</html>
              