vue3鼠标拖拽滑动效果

第一步

在utils下面新建一个directives.js文件，然后引入如下代码

const dragscroll = (el) => {el.onmousedown = ev => {const disX = ev.clientX;const disY = ev.clientY; // 需要上下移动可以加const originalScrollLeft = el.scrollLeft;const originalScrollTop = el.scrollTop; // 需要上下移动可以加const originalScrollBehavior = el.style['scroll-behavior'];const originalPointerEvents = el.style['pointer-events'];el.style['scroll-behavior'] = 'auto';// 鼠标移动事件是监听的整个document，这样可以使鼠标能够在元素外部移动的时候也能实现拖动document.onmousemove = dv => {dv.preventDefault();const distanceX = dv.clientX - disX;const distanceY = dv.clientY - disY; // 需要上下移动可以加el.scrollTo(originalScrollLeft - distanceX, originalScrollTop - distanceY);   // 需要上下移动和左右移动// el.scrollTo(originalScrollLeft - distanceX, 0); // 不需要上下拖拽，y轴值为0};document.onmouseup = () => {document.onmousemove = null;document.onmouseup = null;el.style['scroll-behavior'] = originalScrollBehavior;el.style['pointer-events'] = originalPointerEvents;};};
};
export default dragscroll;

第二步

在main.js中引入

import dragscroll from '@/utils/directives.js'
app.directive('dragscroll',dragscroll)

 第三步

页面直接使用即可

<div id="imgBox" v-dragscroll><img src="@/assets/images/image.svg" alt="" />
</div>