我在js中向html添加了5个按钮，我希望将它们定义为延迟一秒，因此，当js到达addEventListener行时，这些按钮没有定义，并会给出一个错误.
Html:
<!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">
<link rel="stylesheet" href="./style.css">
<title>Document</title>
</head>
<body>
<div id="btn-adder"></div>
<script src="./script.js"></script>
</body>
</html>
Css:以下内容:
*{
padding: 0;
margin: 0;
box-sizing: border-box;
font-size: 20px;
}
body{
background: rgb(61, 61, 61);
}
#btn-adder{
margin-top: 40px;
text-align: center;
}
#btn-adder button{
padding: 5px;
margin: 5px;
}
JavaScript:如下所示:
const btnAdder = document.getElementById("btn-adder");
for (let i = 0; i < 5; i++) {
setTimeout(function () {
btnAdder.innerHTML += `<button id="btn${i}">Button ${i}</button>`;
}, 1000);
}
for (let i = 0; i < 5; i++) {
document.getElementById(`btn${i}`).addEventListener("click", function () {
console.log(`Button ${i} clicked`);
});
}
有没有办法让addEventListener识别新的变量？