如何让一个按钮从另一个按钮中出来

<button id="button1">按钮1</button>
<button id="button2">按钮2</button>

button {
  position: relative;
}

#button2 {
  position: absolute;
  top: 0;
  left: 0;
  display: none;
}

// 获取按钮元素
var button1 = document.getElementById("button1");
var button2 = document.getElementById("button2");

// 给按钮1添加点击事件监听器
button1.addEventListener("click", function() {
  // 显示按钮2
  button2.style.display = "block";
});