查找数组的索引位置[重复]

由薄荷凉发布于 2020-02-07 17:17:41

var cars = ["BMW", "BENZ", "LAMB", "AUDI"];
var abc = cars.indexOf("BMW");
document.getElementById("demo").innerHTML = abc;

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

这是显示位置的代码，但是我要相反，即如果我输入一个位置，它应该显示数组值。如何获得？

2020-02-07 17:17:42

Use array[index]

var index = 0;
var cars = ["BMW", "BENZ", "LAMB", "AUDI"];
var abc = cars[index];
document.getElementById("demo").innerHTML = abc;

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

2020-02-07 17:17:42

干得好

const cars = ["BMW", "BENZ", "LAMB", "AUDI"];
let indexIWant = 0;
document.getElementById("demo").innerText = cars[indexIWant];

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

这家伙很懒，什么都没留下