vue3.0实现穿梭框单点

vue3.0实现穿梭框单点

*{margin:0; padding:0;}
        li{list-style: none;}
        a{text-decoration: none; color: #333;}
        button{border:none;}
        input{outline:none;}
        textarea{resize:none;}
        em,i{font-style: normal;}
        .wrap{
            width: 1000px;
            margin: 0 auto;
            border: 1px solid red;
        }
        .wrap .header{
            width: 100%;
            height: 80px;
            line-height: 80px;
            border-bottom: 2px solid #ccc;
        }
        .wrap .content{
            width: 100%;
            display: flex;
            flex-direction: row;
        }
        .wrap .content .content_left ,.wrap .content .content_right{
            width:500px;
            text-align: center;
            line-height: 60px;
            border-bottom: 1px solid #333;
            height: 500px;
        }
        .wrap .content .content_left{
            border-right: 1px solid #333;
            overflow-y: scroll;
        }
        .wrap .content .content_left_main li{
            height: 100px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .wrap .content .content_left_main li div{
            width: 150px;
            height: 60px;
            background: #1B999A;
            color: #fff;
            cursor: pointer;
        }
        .wrap .content .content_right_main li{
            height: 100px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .wrap .content .content_right_main li div{
            width: 150px;
            height: 60px;
            background: #1B999A;
            color: #fff;
            cursor: pointer;
        }
        .wrap .footer{
            width: 100%;
            height: 100px;
            line-height: 100px;
            display: flex;
            justify-content: space-around;
            align-items: center;
        }
        .wrap .footer button{
            width: 150px;
            height: 60px;
            background: #1B999A;
            color: #fff;
            font-size: 16px;
        }

<div class="wrap">
        <div class="header">
            <h2>暂停原因选择</h2>
        </div>
        <div class="content">
            <div class="content_left" >
                <p>待选择</p>
                <ul class="content_left_main" v-for="(item,index) in content_left_main" :key="index" >
                    <li class="clml" >
                        <div @click = 'change(index)'>{{item.message}}</div>
                    </li>
                </ul>
            </div>
            <div class="content_right" >
                <p>以选择</p>
                <ul class="content_right_main" v-for="(item,index) in obj.arr" :key="index">
                    <li class="clml"  >
                        <div @click = 'changetwo(index)'>{{item.message}}</div>
                    </li>
                </ul>
            </div>
        </div>
        <div class="footer">
            <button>保存</button>
            <button>返回</button>
        </div>
    </div>

<script>
import { reactive, watch } from 'vue'
export default {
    setup(){
        const content_left_main=reactive([
            {   
                id:1,
                message:'设备保养'
            },
            {   
                id:2,
                message:'物料等待'
            },
            {   
                id:3,
                message:'工装维护'
            },
            {   
                id:4,
                message:'设备保养'
            },
            {   
                id:5,
                message:'设备保养'
            },
        ])

        const obj = reactive({
            arr:[]
        })
        const content_right_main=reactive([
            {
                id:1,
                message:''
            }
        ])

        const change = (i)=>{
                // console.log(obj.arr.length)
            if(!obj.arr.length>=1){
                // console.log(obj.arr.length)
                // console.log(111)
                obj.arr.push(content_left_main[i])
                content_left_main.splice(i,1)
                console.log(obj.arr)
            }
            
        }
        // watch(obj.arr,(newValue)=>{
        //     if(newValue.length>1){
        //         obj.arr.splice(0,1);
        //     }
        // })
        const changetwo = (i)=>{
            content_left_main.push(obj.arr[i])
            obj.arr.splice(0,1);
        }
        return {
            //reactive
            content_left_main,content_right_main,obj,
            //methods
            change,changetwo
        }
    }
}
</script>