如何使用按钮在 div 中水平滚动动画

Question

我发现这段代码添加了在 div 中水平滚动的按钮，它是由 Vlad Danila 制作的，但问题是我无法为它的滚动设置动画。我尝试向容器添加过渡，但没有成功。

const buttonRight = document.getElementById('slideRight');
const buttonLeft = document.getElementById('slideLeft');

buttonRight.onclick = function() {
  document.getElementById('container').scrollLeft += 20;
};
buttonLeft.onclick = function() {
  document.getElementById('container').scrollLeft -= 20;
};

#container {
  width: 145px;
  height: 100px;
  border: 1px solid #ccc;
  overflow-x: scroll;
}

#content {
  width: 250px;
  background-color: #ccc;
}

<div id="container">
  <div id="content">Click the buttons to slide horizontally!</div>
</div>
<button id="slideLeft" type="button">Slide left</button>
<button id="slideRight" type="button">Slide right</button>

Answer 1

添加。scroll-behavior: smooth;​#container

const buttonRight = document.getElementById('slideRight');
const buttonLeft = document.getElementById('slideLeft');

buttonRight.onclick = function() {
  document.getElementById('container').scrollLeft += 20;
};
buttonLeft.onclick = function() {
  document.getElementById('container').scrollLeft -= 20;
};

#container {
  width: 145px;
  height: 100px;
  border: 1px solid #ccc;
  overflow-x: scroll;
  scroll-behavior: smooth;
}

#content {
  width: 250px;
  background-color: #ccc;
}

<div id="container">
  <div id="content">Click the buttons to slide horizontally!</div>
</div>
<button id="slideLeft" type="button">Slide left</button>
<button id="slideRight" type="button">Slide right</button>