我需要怎么做才能让我的4个按钮都打开一个不同的新页面

<button id="button1">按钮1</button>
<button id="button2">按钮2</button>
<button id="button3">按钮3</button>
<button id="button4">按钮4</button>

document.getElementById("button1").addEventListener("click", function() {
  window.open("https://www.example1.com");
});

document.getElementById("button2").addEventListener("click", function() {
  window.open("https://www.example2.com");
});

document.getElementById("button3").addEventListener("click", function() {
  window.open("https://www.example3.com");
});

document.getElementById("button4").addEventListener("click", function() {
  window.open("https://www.example4.com");
});