我有 5 个按钮。使用 Fetch，可以获取 api 并将其写入屏幕。我希望在单击按钮 1 时列出前 50 个国家/地区。之后，当您按下按钮 2 时，50-100 之间的国家/地区应该出现在屏幕上。按此顺序，我想在单击每个按钮时删除 250 个国家 50-50
const row = document.querySelector('.row');
const buttons = document.querySelectorAll('button')
fetch('https://restcountries.com/v3.1/all')
.then(res=>res.json())
.then(data=>{
let card = "";
data.map(item=>{
card+=`
<div class="col-md-4">
<div class="card" >
<img height="300" src="${item.flags.png}" class="card-img-top" alt="...">
<div class="card-body">
<h5 class="card-title">${item.name.common}</h5>
<p class="card-text">${item.capital}</p>
<a href="#" class="btn btn-primary">Go somewhere</a>
</div>
</div>
</div>
`
})
row.innerHTML = card;
});<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-rbsA2VBKQhggwzxH7pPCaAqO46MgnOM80zW1RWuH61DGLwZJEdK2Kadq2F9CUG65" crossorigin="anonymous">
</head>
<body>
<button>1</button>
<button>2</button>
<button>3</button>
<button>4</button>
<button>5</button>
<section>
<div class="container mt-5">
<div class="row g-5"></div>
</div>
</section>
<script src="script.js"></script>
</body>
</html>