<p id="demo">单击按钮删除数组的最后一个元素</p>

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

<script>

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

function myFunction(){

    fruits.pop();

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

    x.innerHTML=fruits;

}

</script>

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