HTML数字输入，热检测哪个按钮被点击了？

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

var button1 = document.getElementById("button1");
var button2 = document.getElementById("button2");
var button3 = document.getElementById("button3");

button1.addEventListener("click", function() {
    console.log("按钮1被点击了");
});

button2.addEventListener("click", function() {
    console.log("按钮2被点击了");
});

button3.addEventListener("click", function() {
    console.log("按钮3被点击了");
});