俄罗斯网站制作优化的含义

前言

因为公司业务开发需要拖拽功能。

ps：该功能只能针对高度一致的，如果高度不一致需要另外二开

演示

开始

<template><view style="height: 100%;"><movable-area :style="{'width': '100%', 'height': allHeight + 'px'}"><movable-viewv-for="(item, index) in list":key="item.id":x="0":y="item.y":style="{'height': itemHeight + 'px', 'width': '100%',}"direction="all"@touchstart="handleDragStart(index)"@change="handleMoving(index, $event)"@touchend="handleDragEnd"class="movable-view"><!-- 这里可以放置步骤的详细内容 --><view style="background-color: aqua; padding: 20rpx 0;">{{ item.desc }}</view></movable-view></movable-area></view>
</template><script>
export default {data() {return {list: [],cloneList: [],activeIndex: -1, // 选中oldIndex: -1,moveToIndex: -1, // 移动allHeight: 300,itemHeight: 50};},created() {for(let i = 0; i < 12; i ++) {let info = {id: i,desc: '测试' + i}this.list.push(info)}this.allHeight = 12 * this.itemHeightthis.initList(this.list)},methods: {deepCopy(source) {return JSON.parse(JSON.stringify(source));},initList(list=[]){const newList = this.deepCopy(list);this.list = newList.map((item, index) => {return {...item,y: index * this.itemHeight,key: Math.random() + index};});//拷贝一份初始list值this.cloneList = this.deepCopy(this.list);},// 拖拽开始handleDragStart(index) {this.activeIndex = index;this.oldIndex = index;},handleMoving(index, e){if (e.detail.source !== 'touch') return;const { x, y } = e.detail;const currentY = Math.floor((y + this.itemHeight / 2) / this.itemHeight);this.moveToIndex = Math.min(currentY, this.list.length - 1);//更新移动后的位置if (this.oldIndex !== this.moveToIndex && this.oldIndex !== -1 && this.moveToIndex !== -1) {const newList = this.deepCopy(this.cloneList);//交换位置newList.splice(this.moveToIndex, 0, ...newList.splice(this.activeIndex, 1));this.list.forEach((item, index) => {if (index !== this.activeIndex) {const itemIndex = newList.findIndex(val => val.id === item.id);item.y = itemIndex*this.itemHeight}});this.oldIndex = this.moveToIndex;}},handleDragEnd(e) {if (this.moveToIndex !== -1 && this.activeIndex !== -1 && this.moveToIndex !== this.activeIndex) {this.cloneList.splice(this.moveToIndex, 0, ...this.cloneList.splice(this.activeIndex, 1));}// 重新排序下更新后的位置。this.initList(this.cloneList);this.activeIndex = -1;this.oldIndex = -1;this.moveToIndex = -1;},},
};
</script><style>
.movable-area {}.movable-view {}
</style>