1.子组件slider.vue
<template><div class="drag" ref="dragDiv"><div class="drag_bg"></div><div class="drag_text">{{confirmWords}}</div><div ref="moveDiv" @mousedown="mouseDownFn($event)" :class="{'handler_ok_bg':confirmSuccess}" class="handler handler_bg" style="position: absolute;top: 0px;left: 0px;"></div></div>
</template><script>export default {data(){return {beginClientX: 0,           /*距离屏幕左端距离*/mouseMoveState: false,     /*触发拖动状态  判断*/maxWidth: '',               /*拖动最大宽度，依据滑块宽度算出来的*/confirmWords: '向右拖动滑块验证',   /*滑块文字*/confirmSuccess: false           /*验证成功判断*/}},methods: {//mousedown 事件mouseDownFn:function (e) {if(!this.confirmSuccess){e.preventDefault && e.preventDefault();   //阻止文字选中等 浏览器默认事件this.mouseMoveState = true;this.beginClientX = e.clientX;}},//验证成功函数successFunction(){this.confirmSuccess = true;this.confirmWords = '验证通过';if(window.addEventListener){document.getElementsByTagName('html')[0].removeEventListener('mousemove',this.mouseMoveFn);document.getElementsByTagName('html')[0].removeEventListener('mouseup',this.moseUpFn);}else {document.getElementsByTagName('html')[0].removeEventListener('mouseup',()=>{});}document.getElementsByClassName('drag_text')[0].style.color = '#fff';document.getElementsByClassName('handler')[0].style.left = this.maxWidth + 'px';document.getElementsByClassName('drag_bg')[0].style.width = this.maxWidth + 'px';},//mousemove事件mouseMoveFn(e){if(this.mouseMoveState){let width = e.clientX - this.beginClientX;if(width>0 && width<=this.maxWidth){document.getElementsByClassName('handler')[0].style.left = width + 'px';document.getElementsByClassName('drag_bg')[0].style.width = width + 'px';}else if(width>this.maxWidth){this.successFunction();}}},//mouseup事件moseUpFn(e){this.mouseMoveState = false;var width = e.clientX - this.beginClientX;if(width<this.maxWidth){document.getElementsByClassName('handler')[0].style.left = 0 + 'px';document.getElementsByClassName('drag_bg')[0].style.width = 0 + 'px';}}},mounted(){this.maxWidth = this.$refs.dragDiv.clientWidth - this.$refs.moveDiv.clientWidth;document.getElementsByTagName('html')[0].addEventListener('mousemove',this.mouseMoveFn);document.getElementsByTagName('html')[0].addEventListener('mouseup',this.moseUpFn)}}
</script>
<style scoped>.drag{position: relative;background-color: #e8e8e8;width: 100%;height: 40px;line-height: 40px;text-align: center;border: 1px solid #ccc;border-radius: 4px;}.handler{width: 40px;height: 38px;border: 1px solid #ccc;border-radius: 4px;cursor: move;}.handler_bg{background: #fff url("data:image/png;base64,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") no-repeat center;}.handler_ok_bg{border-top-left-radius: 0;border-bottom-left-radius: 0;background: #fff url("data:image/png;base64,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") no-repeat center;}.drag_bg{background-color: #7ac23c;height: 38px;width: 0px;border-radius: 4px 0 0 4px;}.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>

2.调用组件：（使用了ElementUI）<template><el-form class="form-wrapper" ref="myForm" :model="myForm" label-width="110px"><el-form-item label="滑块验证："><div><slider ref="slider"></slider></div></el-form-item><el-form-item><el-button type="primary" @click="toSubmit">提交</el-button></el-form-item></el-form>
</template>
<script type="text/ecmascript-6">import slider from './slider'export default {data() {return {myForm: {}}},components: {slider},methods: {toSubmit() {if(this.$refs['slider']) {// 未通过验证时，提示错误信息并返回if (!this.$refs['slider'].confirmSuccess) {this.$message.error("请拖动滑块验证");return}}// 通过验证后提交// TO DO ...this.$message.success("验证成功，可提交");},}}
</script>
<style type="text/css" scoped>.form-wrapper {margin-top: 50px;width: 500px;}
</style>