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Copy pathdrag拖拽列表排序.html
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drag拖拽列表排序.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
.container {
border: 1px solid black;
list-style: none;
}
.list-item {
background-color: #9c9c9c;
border: 1px solid #d9d9d9;
border-radius: 4px;
padding: 10px;
color: #fff;
line-height: 24px;
cursor: pointer;
transition: all 1s ease-in-out;
}
.sort-move {
transition: transform 0.3s;
}
</style>
</head>
<body>
<div id="app">
<!-- <transition class="transition-wrapper" name="sort"> -->
<div class="container"
ref="container"
@dragover="dragOver"
@dragend="dragEnd">
<p class="list-item"
v-for="(item, index) in lists"
:key="index"
draggable="true"
@dragstart="dragStart">
{{ item.order }}
</p>
</div>
<!-- </transition> -->
</div>
</body>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var app = new Vue({
el: '#app',
data () {
return {
lists: [
{ order: 1, name: '课程1' },
{ order: 2, name: '课程2' },
{ order: 3, name: '课程3' },
{ order: 4, name: '课程4' },
{ order: 5, name: '课程5' },
{ order: 6, name: '课程6' },
{ order: 7, name: '课程7' },
],
dragEle: null, // 被拖拽的对象
target: null, //目标对象
}
},
mounted () {
//为了防止火狐浏览器拖拽的时候以新标签打开，此代码真实有效
document.body.ondrop = (event) => {
console.log(event)
event.preventDefault();
event.stopPropagation();
}
},
methods: {
// 拖拽开始
dragStart (event) {
console.log("drag start", event.target)
this.dragEle = event.target;
},
// 当元素或选中的文本被拖到一个可释放目标上时触发（每100毫秒触发一次）
dragOver (event) {
console.log('drag move')
this.target = event.target;
// let targetTop = event.target.getBoundingClientRect().top;
// let dragEleTop = this.dragEle.getBoundingClientRect().top;
if (this.target.nodeName === "P" && this.target !== this.dragEle) {
// console.log(this.dragEle, this.target, targetTop, dragEleTop)
if (this.target.animated) {
return;
}
console.log(this.getIndex(this.dragEle), this.getIndex(this.target))
if (this.getIndex(this.dragEle) < this.getIndex(this.target)) {
this.$refs.container.insertBefore(this.target, this.dragEle);
} else {
this.$refs.container.insertBefore(this.dragEle, this.target);
}
// 动画
// this._anim(this.target, targetTop);
// this._anim(this.dragEle, dragEleTop);
}
},
getIndex (el) {
let pDom = Array.from(this.$refs.container.childNodes);
return pDom.findIndex(item => {
return item.innerText === el.innerText;
});
},
_anim (el, startPos) {
console.log('>>>', el.getBoundingClientRect().top, startPos)
let offset = startPos - el.getBoundingClientRect().top;
console.log(offset)
el.style.transition = "none";
el.style.transform = `translateY(${offset}px)`;
//触发重绘
el.offsetWidth;
el.style.transition = "transform .15s";
el.style.transform = ``;
//触发重绘
// setTimeout(()=>{
// el.style.transition="transform .3s";
// el.style.transform=``;
// },0)
clearTimeout(el.animated);
el.animated = setTimeout(() => {
el.style.transition = "";
el.style.transform = ``;
el.animated = false;
}, 150)
},
dragEnd (event) {
console.log('drag end', event.target)
let nodes = Array.from(this.$refs.container.childNodes);
let updateList = nodes.map((item) => {
return item.innerText
});
console.log(updateList)
}
}
})
</script>
</html>