如何从不同的按钮多次调用一个函数？

document.getElementById("button1").addEventListener("click", myFunction);
document.getElementById("button2").addEventListener("click", myFunction);

function myFunction() {
  // 函数的具体逻辑
}

document.getElementById("buttons-container").addEventListener("click", function(event) {
  if (event.target.classList.contains("my-button")) {
    myFunction();
  }
});

function myFunction() {
  // 函数的具体逻辑
}

<button data-action="action1">按钮1</button>
<button data-action="action2">按钮2</button>

var buttons = document.querySelectorAll("button[data-action]");

for (var i = 0; i < buttons.length; i++) {
  buttons[i].addEventListener("click", function() {
    var action = this.getAttribute("data-action");
    myFunction(action);
  });
}

function myFunction(action) {
  // 根据action执行相应的逻辑
}