javascript - 如何编写一个选择数组中第一个按钮的 for 循环？

Question

如何添加一个 for 循环来选择.mybuttons类所在 div 的第一个按钮？

var mapNumber;

const mybuttons = document.querySelectorAll('.mybuttons button');
mybuttons.forEach(mybutton => {
  mybutton.addEventListener('click', processClick);
});

function processClick() {
  window.mapNumber = this.id; // the id of the clicked button
}

<div class="mybuttons">
  <button id="One">One</button>
  <button id="Two">Two</button>
  <button id="Three">Three</button>
  <button id="Four">Four</button>
  <button id="Five">Five</button>
</div>

标签： javascriptfor-loopvariables