前端实现滑动解锁

<template>
  <div>
    <div id="box">
      <div class="bgColor"></div>
      <div class="txt" >滑动解锁</div>
      <!--给i标签添加上相应字体图标的类名即可-->
      <div class="slider">
        <i v-show="!isSuccess" class="el-icon-d-arrow-right"></i>
        <i v-show="isSuccess" class="el-icon-check"></i>
      </div>
    </div>
  </div>
  
</template>

<script>
export default {
  mounted(){
    var self=this;
    //一、定义了一个获取元素的方法
    function getEle(selector){
        return document.querySelector(selector);
    }
    //二、获取到需要用到的DOM元素
    var box = getEle("#box"),//容器
        bgColor = getEle(".bgColor"),//背景色
        txt = getEle(".txt"),//文本
        slider = getEle(".slider"),//滑块
        icon = getEle(".slider>i"),
        successMoveDistance = box.offsetWidth- slider.offsetWidth,//解锁需要滑动的距离
        downX;//用于存放鼠标按下时的位置
    //三、给滑块添加鼠标按下事件
    slider.onmousedown = mousedownHandler;
    slider.ontouchstart = mousedownHandler;//移动端加touchstart事件
    //3.1鼠标按下事件的方法实现
    function mousedownHandler(e){
      bgColor.style.transition = "";
      slider.style.transition = "";
      var e = e || window.event || e.which;
      downX = e.clientX ? e.clientX : e.changedTouches[0].clientX;
      if(!self.isSuccess){
        //在鼠标按下时，分别给鼠标添加移动和松开事件
        document.onmousemove = mousemoveHandler;
        document.onmouseup = mouseupHandler;
        //添加移动端对应事件
        document.ontouchmove = mousemoveHandler;
        document.ontouchend = mouseupHandler;
      }
        
    };
    //四、定义一个获取鼠标当前需要移动多少距离的方法
    function getOffsetX(offset,min,max){
        if(offset < min){
            offset = min;
        }else if(offset > max){
            offset = max;
        }
        return offset;
    }
    //3.1.1鼠标移动事件的方法实现
    function mousemoveHandler(e){
      var e = e || window.event || e.which;
      var moveX = e.clientX?e.clientX:e.changedTouches[0].clientX;
      console.log(moveX)
      var offsetX = getOffsetX(moveX - downX,0,successMoveDistance);
      bgColor.style.width = offsetX + "px";
      slider.style.left = offsetX + "px";

      if(offsetX == successMoveDistance){
          success();
      }
      //如果不设置滑块滑动时会出现问题（目前还不知道为什么）
      e.preventDefault();
    };
    //3.1.2鼠标松开事件的方法实现
    function mouseupHandler(e){if(!self.isSuccess){
          bgColor.style.width = 0 + "px";
          slider.style.left = 0 + "px";
          bgColor.style.transition = "width 0.5s linear";
          slider.style.transition = "left 0.5s linear";
      }
      document.onmousemove = null;
      document.onmouseup = null;
      //移除移动端事件
      document.ontouchmove = null;
      document.ontouchend = null;
    };
    //五、定义一个滑块解锁成功的方法
    function success(){
      self.isSuccess = true;
      txt.innerHTML = "解锁成功";
      bgColor.style.backgroundColor ="lightgreen";
      //滑动成功时，移除鼠标按下事件和鼠标移动事件
      slider.onmousedown = null;
      document.onmousemove = null;
      //移除移动端事件
      document.ontouchstart = null;
      document.ontouchmove = null;
    };
  },
  
  data(){
    return {
      isSuccess:false
    }
  }
}
</script>

<style>
//  使用全局样式样式去掉
* { touch-action: pan-y; } 

#box{
  position: relative;
  width:300px;
  height:40px;
  margin: 0 auto;
  margin-top: 10px; 
  background-color: #e8e8e8;
  box-shadow: 1px 1px 5px rgba(0,0,0,0.2);
}
.bgColor{
  position: absolute;
  left:0;
  top:0;
  width:40px;
  height: 40px;
  background-color: lightblue;
}
.txt{
  position: absolute;
  width: 100%;
  height: 40px;
  line-height: 40px;
  font-size: 14px;
  color: #000;
  text-align: center;
}
.slider{
  position: absolute;
  left:0;
  top:0;
  width: 50px;
  height: 40px;
  // border: 1px solid #ccc;
  background: #fff;
  text-align: center;
  cursor: move;
}
.slider>i{
  position: absolute;
  top:50%;
  left:50%;
  transform: translate(-50%,-50%);
}

</style>

//  使用全局样式样式去掉
* { touch-action: pan-y; }