从一个数组中选择元素 - slice()

<p id="demo">点击按钮截取数组下标 1 到 2 的元素。</p>

<button onclick="myFunction()">点我</button>

<script>

  function myFunction() {

    var fruits = ["Banana", "Orange", "Lemon", "Apple", "Mango"];

    var citrus = fruits.slice(1, 3);

    var x = document.getElementById("demo");

    x.innerHTML = citrus;

  }

</script>