Vue realizes the whole process of slider drag verification function

<template>
    <div class="drag-wrapper" ref="dragDiv">
        <div class="drag_bg"></div>
        <div class="drag_text f14">{{ confirmWords }}</div>
        <!-- Moved Modules -->
        <div ref="moveDiv"
             @mousedown="mousedownFn($event)"
             :class="{'handler_ok_bg': confirmSuccess}"
             class="handler handler_bg"></div>
    </div>
</template>

<style scoped>
    .drag{
        position: relative;
        background-color: #e8e8e8;
        width: 100%;
        height: 40px;
        line-height: 40px;
        text-align: center;
    }
    .handler{
        width: 40px;
        height: 40px;
        border: 1px solid #ccc;
        cursor: move;
        position: absolute;top: 0px;left: 0px;
    }
    .handler_bg{
        background: #fff url("data:image/png;base64,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") no-repeat center;
    }
    .handler_ok_bg{
        background: #fff url("data:image/png;base64,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") no-repeat center;
    }
    .drag_bg{
        background-color: #7ac23c;
        height: 40px;
        width: 0px;
    }
    .drag_text{
        position: absolute;
        top: 0px;
        width: 100%;text-align: center;
        -moz-user-select: none;
        -webkit-user-select: none;
        user-select: none;
        -o-user-select:none;
        -ms-user-select:none;
    }
</style>

data() {
    return {
        beginClientX:0, // Distance from the left end of the screenmouseMoveStata:false, // Trigger drag status judgmentmaxwidth:'', // Maximum drag width, calculated based on the slider widthconfirmWords:'Drag slider verification', // Slider textconfirmSuccess:false // Verification success judgment}
}

mounted() {
    // Calculate the maximum draggable width based on the slider width this.maxwidth = this.$refs.dragDiv.clientWidth - this.$refs.moveDiv.clientWidth
    // Listen for finger touch events document.getElementsByTagName('html')[0].addEventListener('mousemove', this.mouseMoveFn)
    // Listen for finger leaving events document.getElementsByTagName('html')[0].addEventListener('mouseup', this.moseUpFn)
}

//Verify success function mouseMoveFn(e){
    if(this.mouseMoveStata){
        let width = e.clientX - this.beginClientX
        if(width > 0 && width <= this.maxwidth) {
            document.getElementsByClassName('handler')[0].style.left = width + 'px'
            document.getElementsByClassName('drag_bg')[0].style.width = width + 'px'
        }else if(width > this.maxwidth) this.successFunction()
    }
},

moseUpFn(e) {
    this.mouseMoveState = !1 // Modify state const width = e.clientX - this.beginClientX // Calculate and get width if (width < this.maxwidth) { // When the width is less than the width of the module, assign a value document.getElementsByClassName('handler')[0].style.left = 0 + 'px'
        document.getElementsByClassName('drag_bg')[0].style.width = 0 + 'px'
    }
}

mousedownFn:function (e) {
    e.preventDefault && e.preventDefault() // Prevent default browser events such as text selection this.mouseMoveStata = true // Open the threshold for triggering the drag state this.beginClientX = e.clientX // Record the distance the finger moves},

<script>
    export default {
        data(){
            return {
                beginClientX:0, /*Distance from the left end of the screen*/
                mouseMoveStata:false, /*Trigger drag status judgment*/
                maxwidth:'', /*Maximum drag width, calculated based on the slider width*/
                confirmWords:'Drag the slider to verify', /*slider text*/
                confirmSuccess:false /*Verification success judgment*/
            }
        },
        mounted(){
            this.maxwidth = this.$refs.dragDiv.clientWidth - this.$refs.moveDiv.clientWidth
            document.getElementsByTagName('html')[0].addEventListener('mousemove',this.mouseMoveFn)
            document.getElementsByTagName('html')[0].addEventListener('mouseup',this.moseUpFn)
        },
        methods: {
            mousedownFn:function (e) {
                if(!this.confirmSuccess){
                    e.preventDefault && e.preventDefault() //Prevent text selection and other browser default events this.mouseMoveStata = true
                    this.beginClientX = e.clientX
                }
            },
            //mousedoen event successFunction(){
                this.confirmSuccess = true
                this.confirmWords = 'Verification passed'
                this.$emit('onValidation', true)
                if(window.addEventListener){
                    document.getElementsByTagName('html')[0].removeEventListener('mousemove',this.mouseMoveFn)
                    document.getElementsByTagName('html')[0].removeEventListener('mouseup',this.moseUpFn)
                }else document.getElementsByTagName('html')[0].removeEventListener('mouseup',()=>{})
                document.getElementsByClassName('drag_text')[0].style.color = '#fff'
                document.getElementsByClassName('handler')[0].style.left = this.maxwidth + 'px'
                document.getElementsByClassName('drag_bg')[0].style.width = this.maxwidth + 'px'
            },
            //Verify success function mouseMoveFn(e){
                if(this.mouseMoveStata){
                    let width = e.clientX - this.beginClientX
                    if(width > 0 && width <= this.maxwidth) {
                        document.getElementsByClassName('handler')[0].style.left = width + 'px'
                        document.getElementsByClassName('drag_bg')[0].style.width = width + 'px'
                    }else if(width > this.maxwidth) this.successFunction()
                }
            },
            //mousemove event moseUpFn(e){
                this.mouseMoveStata = false
                var width = e.clientX - this.beginClientX
                if(width<this.maxwidth){
                    document.getElementsByClassName('handler')[0].style.left = 0 + 'px'
                    document.getElementsByClassName('drag_bg')[0].style.width = 0 + 'px'
                }
            }
        }
    }
</script>