Vue实现pc/H5弹窗拖拽

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
    <title>pc拖拽</title>
    <style>
        .move {
            position: absolute;
            width: 100px;
            height: 100px;
            background-color: steelblue;
            border-radius: 50%;
            cursor: move;
        }
    </style>
</head>

<body>
    <div id="vue">
        <div class="move" @mousedown="mousedown" @mouseup="mouseup"></div>
    </div>
</body>
<script src="https://cdn.suoluomei.com/common/js2.0/vue/v2.5.16/vue.js"></script>
<script>
    new Vue({
        el: '#vue',
        data: {},
        methods: {
            mousedown(e) {
                var target = e.target
                var x = e.clientX
                var y = e.clientY
                var left = x - target.offsetLeft
                var top = y - target.offsetTop
                document.onmousemove = (e) => {
                    var nx = e.clientX - left
                    var ny = e.clientY - top
                    target.style.left = nx + 'px'
                    target.style.top = ny + 'px'
                }
            },
            mouseup(e) {
                document.onmousemove = null
            }
        }
    })
</script>

</html>

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <link rel="stylesheet" href="https://cdn.suoluomei.com/common/js2.0/npm/vant@2.2/lib/index.css">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
    <title>H5拖拽</title>
    <style>
        .move {
            position: absolute;
            width: 100px;
            height: 100px;
            background-color: slategray;
            border-radius: 50%;
        }
    </style>
</head>

<body>
    <div id="Vue">
        <div class="move" :style="{top:top + 'px',left:left + 'px'}" @touchstart="touchstart"
            @touchmove.prevent="touchmove" @touchend="touchend"></div>
    </div>
</body>
<script src="https://cdn.suoluomei.com/common/js2.0/vue/v2.5.16/vue.js"></script>
<script>
    new Vue({
        el: "#Vue",
        data: {
            x: 0,
            y: 0,
            l: 0,
            t: 0,
            left: "",
            top: "",
            isDown: false
        },
        methods: {
            touchstart(e) {
                this.x = e.changedTouches[0].pageX
                this.y = e.changedTouches[0].pageY
                this.l = this.left
                this.t = this.top
                this.isDown = true
            },
            touchmove(e) {
                if (this.isDown) {
                    var nx = e.changedTouches[0].pageX
                    var ny = e.changedTouches[0].pageY
                    var nl = nx - (this.x - this.l)
                    var nt = ny - (this.y - this.t)
                    this.left = nl
                    this.top = nt
                }
            },
            touchend(e) {
                this.isDown = false
            }
        }
    })
</script>

</html>