Vue 实现拖动滑块验证功能(只有css+js没有后台验证步骤)

代码结构与实现细节

<!DOCTYPE html>
<html>
 <head>
  <meta charset="UTF-8">
  <title></title>
  <style scoped>
   .drag {
    border-radius:30px;
    position: relative;
    background-color: #75CDF9;
    width: 300px;
    height: 34px;
    margin-left: 30px;
    margin-top: 100px;
    line-height: 34px;
    text-align: center;
   }
   .handler {
    border-radius:30px;
    position: absolute;
    top: 0px;
    left: 0px;
    width: 40px;
    height: 32px;
    border: 1px solid #ccc;
    cursor: move;
   }
   .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 {
    border-radius:30px;
    background-color: #13CE66;
    height: 34px;
    width: 0px;
   }
   .drag_text {
    position: absolute;
    top: 0px;
    width: 300px;
    -moz-user-select: none;
    -webkit-user-select: none;
    user-select: none;
    -o-user-select: none;
    -ms-user-select: none;
   }
  </style>
 </head>
 <body>
  <div id="app">
   <div class="drag" >
    <div class="drag_bg"></div>
    <div class="drag_text">{{confirmWords}}</div>
    <div @mousedown="mousedownFn($event)" class="handler handler_bg"></div>
   </div>
  </div>
  <script src="https://cdn.jsdelivr.net/npm/vue"></script>
  <script src="https://unpkg.com/element-ui/lib/index.js"></script>
  <script src="http://libs.baidu.com/jquery/2.1.4/jquery.min.js"></script>
  <script>
   var vm = new Vue({
    el: "#app",
    name: '',
    components: {},
    props: {},
    data() {
     return {
      beginClientX: 0,
      /*距离屏幕左端距离*/
      mouseMoveStata: false,
      /*触发拖动状态 判断*/
      maxwidth: 258,
      /*拖动最大宽度，依据滑块宽度算出来的*/
      confirmWords: '拖动滑块验证',
      /*滑块文字*/
      confirmSuccess: false, /*验证成功判断*/
     }
    },
    created() {},
    watch: {
    },
    methods: {
     mousedownFn: function(e) {
      this.mouseMoveStata = true;
      this.beginClientX = e.clientX;
     }, //按下滑块函数 
     successFunction() {
      $(".handler").removeClass('handler_bg').addClass('handler_ok_bg');
      this.confirmWords = '验证通过'
      $(".drag").css({
       'color': '#fff'
      });
      $(".drag").css({
       'background-color': '#13CE66'
      });
      $(".handler").css({
       'left': this.maxwidth
      });
      $(".drag_bg").css({
       'width': this.maxwidth
      });
      $('body').unbind('mousemove');
      $('body').unbind('mouseup');
      this.confirmSuccess = true;
     } //验证成功函数 
    },
    mounted() {
     $('body').on('mousemove', (e) => {
      //拖动，这里需要用箭头函数，不然this的指向不会是vue对象 
      if(this.mouseMoveStata) {
       var width = e.clientX - this.beginClientX;
       if(width > 0 && width <= this.maxwidth) {
        $(".handler").css({
         'left': width
        });
        $(".drag_bg").css({
         'width': width
        });
       } else if(width > this.maxwidth) {
        this.successFunction();
       }
      }
     });
     $('body').on('mouseup', (e) => {
      //鼠标放开 
      this.mouseMoveStata = false;
      var width = e.clientX - this.beginClientX;
      if(width < this.maxwidth) {
       $(".handler").css({
        'left': 0
       });
       $(".drag_bg").css({
        'width': 0
       });
      }
     })
    }
   });
  </script>
 </body>
</html>