Vue 滑块解锁组件（无UA算法校验）

依据 JS拖动滑块验证 开发的 Vue 滑块解锁组件。

<template>
  <div ref="wrap" class="slider-unlock">
    <div class="before">请按住滑块，拖动到最右边</div>
    <div ref="after" class="after">
      <div class="after-inner">{{ success?'验证成功':'请按住滑块，拖动到最右边' }}</div>
    </div>
    <div ref="slider" class="slider" :class="{'is-success': success}" />
  </div>
</template>

<script>
export default {
  name: 'SliderUnlock',
  data() {
    return {
      success: false,
      clear: null,
    }
  },
  mounted() {
    this.init()
  },
  beforeDestroy() {
    this.clear && this.clear()
  },
  methods: {
    init() {
      // 获取 dom
      const after = this.$refs.after
      const slider = this.$refs.slider
      const wrap = this.$refs.wrap
      // 设置after-inner的固定宽度
      after.childNodes[0].style.width = wrap.offsetWidth + 'px'
      // 滑块移动最大位置
      const limit = wrap.offsetWidth - slider.offsetWidth

      // 实时计算滑块的偏移量
      let offsetX
      // 点击滑块时的鼠标X位置
      let initX

      // 页面鼠标移动事件
      const docMousemoveHandler = e => {
        // 获取移动后鼠标实时位置
        const moveX = e.clientX
        // 计算滑块应该移动的偏移量
        offsetX = moveX - initX

        // 限制上下限
        if (offsetX < 0) {
          offsetX = 0
        } else if (offsetX > limit) {
          offsetX = limit
        }

        // 移动滑块
        slider.style.left = offsetX + 'px'
        // 修改高亮背景宽度
        after.style.width = offsetX + 'px'

        if (offsetX >= limit) {
          this.success = true
          this.$emit('success')
          document.removeEventListener('mousemove', docMousemoveHandler)
          slider.removeEventListener('mousedown', sliderMousedownHandler)
        }
      }

      // 页面鼠标松开事件
      const docMouseupHandler = e => {
        // 解绑事件
        document.removeEventListener('mousemove', docMousemoveHandler)
        // 重置滑块
        if (offsetX < limit) {
          slider.style.left = 0
          after.style.width = 0
        }
      }

      // 滑块点击事件
      const sliderMousedownHandler = e => {
        // 获取鼠标位置
        initX = e.clientX
        // 绑定页面的鼠标移动事件
        document.addEventListener('mousemove', docMousemoveHandler)
      }

      // 绑定滑块点击事件
      slider.addEventListener('mousedown', sliderMousedownHandler)

      // 页面鼠标松开事件
      document.addEventListener('mouseup', docMouseupHandler)

      // 定义清理方法
      this.clear = () => {
        document.removeEventListener('mousemove', docMousemoveHandler)
        slider.removeEventListener('mousedown', sliderMousedownHandler)
        document.removeEventListener('mouseup', docMouseupHandler)
      }
    },
  },
}
</script>

<style lang="less" scoped>
.slider-unlock{
  height: 45px;
  background: #E1E1E1;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
  border: 1px solid #CCCCCC;
  box-sizing: border-box;
  user-select: none;
  .before, .after {
    position: absolute;
    margin: -1px 0 0 -1px;
    top: 0;
    left: 0;
    z-index: 1;
    height: 100%;
    box-sizing: content-box;
    font-size: 14px;
    font-weight: bold;
    line-height: 43px;
    text-align: center;
  }
  .before {
    width: 100%;
    color: #333;
    padding: 0 1px 1px 0;
  }
  .after {
    width: 0;
    overflow: hidden;
    padding: 0 0 1px 0;
    &-inner {
      position: absolute;
      width:100%;
      height: 100%;
      color: #fff;
      background-color: #40C057;
    }
  }
  .slider{
    position: absolute;
    margin: -1px 0 0 -1px;
    top: 0;
    left: 0;
    z-index: 3;
    width: 70px;
    height: 45px;
    border: 1px solid #CCC;
    cursor: pointer;
    background: no-repeat center center #fff;
    background-image: url(~@/imgs/icon-allow-right.png);
    &.is-success {
      background-image: url(~@/imgs/icon-success.png);
    }
  }
}
</style>

使用：

<SliderUnlock @success="handler" />

效果：

标签：Vue,const,success,滑块,offsetX,slider,1px,UA
来源： https://blog.csdn.net/u012961419/article/details/121084489