基于flv.js自定义播放器

公司需要播放flv格式播放器，所以基于flv.js写了个带UI的播放器，需要的可以直接复制，

 

1.引入

首先必须安装flv.js， npm install flv.js --save,

 

  <FlvVideo   :VideoUrl="defintion" VideoCode="flv"> FlvVideo>
import FlvVideo from "~/components/flv";
export default {
  components:{
    FlvVideo
  },
。。。。。
}

2.设置清晰度

 
 this.defintion=[//设置不同清晰度，以及清晰度按钮文本
              {url:this.urls+'?definition=LD&videoType=flv',leavel:'高清'},
              {url:this.urls+'?definition=SD&videoType=flv',leavel:'超清'}
              ]

 

 

//将一下代码保存为flv.vue

<template>

  <div class="video-box" :style="{position:isFixed}">
    
    <div class="video-box-body"  @mousemove="Enter" @mouseenter="Enter" @click="Enter">
      <div class="loader" v-show="isLoading" title="2">
        <svg
          version="1.1"
          id="loader-1"
          x="0px"
          y="0px"
          width="100px"
          height="100px"
          viewBox="0 0 50 50"
          style="enable-background:new 0 0 50 50;"
          xml:space="preserve"
        >
          <path
            fill="#000"
            d="M43.935,25.145c0-10.318-8.364-18.683-18.683-18.683c-10.318,0-18.683,8.365-18.683,18.683h4.068c0-8.071,6.543-14.615,14.615-14.615c8.072,0,14.615,6.543,14.615,14.615H43.935z"
            transform="rotate(110.097 25 25)"
          >
            <animateTransform
              attributeType="xml"
              attributeName="transform"
              type="rotate"
              from="0 25 25"
              to="360 25 25"
              dur="0.6s"
              repeatCount="indefinite"
            />
          path>
        svg>
        <div class="load-msg">加载中,请稍后....div>
      div>
      <canvas v-show="isCanvas" class="video-body" id="canvas">您的浏览器不支持canvascanvas>
      <video
        v-show="!isCanvas"
        class="video-body"
        @ended="ended($event)"
        @error="error($event)"
        @loadstart="loadstart($event)"
        @canplay="canplay($event)"
        @seeking="seeking($event)"
        @seeked="seeked($event)"
        @timeupdate="timeupdate($event)"
        id="videoBody"
      >您的浏览器不支持videovideo>
      
      <div class="video-control" v-if="isLoaded" v-show="isShowControl">
        <div class="pull-left fontzero control-leftview">
          
          
          
          <div class="control-btn playbtn" :class="{pausebtn:isPlay}" @click="play">div>
        div>
        <div class="pull-left fontzero progress-box">
          <div class="progress-box-body">
            
            <div class="current-time pull-left">{{currentDuration|initTimeLength}}div>
            <div class="durationbar-box pull-left">
              
              <div class="durationbar">
                
                <div class="bufferbar" :style="{width:getBuffPrecent+'%'}">div>
                
                <div class="currentbar" :style="{width:(currentDuration/duration)*100+'%'}">div>
                <div
                  class="drawbar"
                  :class="{drawbar_active:isdrawbar_active}"
                  :style="{left:(currentDuration/duration)*100+'%',transform: 'scale(2) rotateZ('+(currentDuration/duration)*4*720+'deg)'}"
                >div>
                <input
                  class="bar-input"
                  @mouseup="removeDrawbar"
                  @mousedown="setDrawbar"
                  @input="slider($event)"
                  @change="slider($event)"
                  type="range"
                  min="0"
                  max="100"
                  :value="getCurrentDurationPercent"
                />
              div>
            div>
            
            <div class="duration-time pull-left">{{duration|initTimeLength}}div>
          div>
        div>
        <div class="pull-left fontzero control-rightview">
          
          <div class="defintion-wrap" v-show="isShowDefintion">
            <div
              class="leavel"
              v-for="(item,index) in VideoUrl"
              :key="item.leave"
              :class="{isActive:defintion==item.leavel}"
              @click="chooseDefintion(item.leavel,index)"
            >{{item.leavel}}div>
          div>
          <div class="defintion" @click="openDefintion">{{defintion}}div>
          
          <div class="speed-wrap" v-show="isShowSpeed">
            <div
              class="leavel"
              v-for="item in Speed"
              :key="item"
              @click="chooseSpeed(item)"
              :class="{isActive:speed==item}"
            >X{{item.toFixed(1)}}div>
          div>
          <div class="speed" @click="openSpeed">X{{speed}}div>
          
          <div class="control-btn mutedbtn">div>
          <input
            class="volume-input"
            :style="{'background':'linear-gradient(to right, #059CFA, #ebeff4 ' + volume + '%, #ebeff4)' }"
            @input="setvolume($event)"
            @change="setvolume($event)"
            type="range"
            min="0"
            max="100"
            :value="volume"
          />
 

          
          <div class="control-btn fullscreenbar" @click="fullScreen">div>
        div>
      div>
      <div class="video-progress" v-if="ifisShowControl" v-show="!isShowControl">
        <div class="video-progress-current" :style="{width:(currentDuration/duration)*100+'%'}">div>
      div>
    div>
  div>
template>
<script>
export default {
  data() {
    return {
      currentDuration: "0",
      duration: "1",
      getBuffPrecent: "",
      isPlay: false,
      refDom: null,
      flv_player_instance: null,
      volume: 0,
      canvas: null,
      context: null,
      isCanvas: false,
      isShowControl: false,
      isLoading: false,
      isdrawbar_active: false,
      width: 0,
      height: 0,
      isFixed: "relative",
      timer: null,
      speed:1,
      defintion: "",
      isShowSpeed: false,
      isShowDefintion: false,
      controlTimer: null,
      getCurrentDurationPercent: 0,
      flvVideoCode: "flv",
      isLoaded:false,
      defintionTimer:null,
      speedTimer:null
    };
  },
  head() {
    return {};
  },
  props: {
    // VideoUrl: {
    //   type: String,
    //   default:
    //     "http://store.91yunshi.com/storage/videoAuth/gaugua/41175fe7fdc74354a8d99a3f7aa1457d.mp4?videoType=flv&_t=1592535251776"
    // },
    Speed: {
      type: Array,
      default() {
        return [0.5, 1.0, 1.5, 2];
      }
    },
    ifisShowControl: {
      type: Boolean,
      default: true //只支持flv或MP4
    },
    VideoCode: {
      type: String,
      default: "flv", //只支持flv或MP4
      validator: function(value) {
        // 这个值必须匹配下列字符串中的一个
        return ["flv", "mp4"].indexOf(value) !== -1;
      }
    },
    VideoUrl: {
      type: Array,
      default() {
        return [
          // {
          //   url:
          //     "http://store.91yunshi.com/storage/videoAuth/gaugua/41175fe7fdc74354a8d99a3f7aa1457d.mp4?videoType=flv&_t=1592535251776",
          //   leavel: "高清"
          // },
          // {
          //   url:
          //     "http://store.91yunshi.com/storage/videoAuth/gaugua/41175fe7fdc74354a8d99a3f7aa1457d.mp4?videoType=flv&_t=1592535251776",
          //   leavel: "超清"
          // },
          // {
          //   url:
          //     "http://store.91yunshi.com/storage/videoAuth/gaugua/41175fe7fdc74354a8d99a3f7aa1457d.mp4?videoType=flv&_t=1592535251776",
          //   leavel: "蓝光"
          // }
        ];
      }
    }
  },
  watch: {
    VideoUrl: {
      handler(newVal, old) {
        this.reloadUrl();
      },
      deep: true
    }
  },
  filters: {
    // defintionFilter(defintion) {
    //   let defintionStr = "";
    //   switch (defintion) {
    //     case "SD":
    //       defintionStr = "高清";
    //       break;
    //     case "HD":
    //       defintionStr = "超清";
    //       break;
    //     default:
    //       defintionStr = "高清";
    //       break;
    //   }
    //   return defintionStr;
    // },
    initTimeLength(timeLength) {
      let result = parseInt(timeLength);
      let h =
        Math.floor(result / 3600) < 10
          ? "0" + Math.floor(result / 3600)
          : Math.floor(result / 3600);
      let m =
        Math.floor((result / 60) % 60) < 10
          ? "0" + Math.floor((result / 60) % 60)
          : Math.floor((result / 60) % 60);
      let s =
        Math.floor(result % 60) < 10
          ? "0" + Math.floor(result % 60)
          : Math.floor(result % 60);
 

      return `${h}:${m}:${s}`;
      // //根据秒数格式化时间
      // timeLength = parseInt(timeLength);
      // var second = timeLength % 60;
      // var minute = (timeLength - second) / 60;
      // return (
      //   (minute < 10 ? "0" + minute : minute) +
      //   ":" +
      //   (second < 10 ? "0" + second : second)
      // );
    },
    // speedFilter(val){
    //   console.log(val);
    //   let num = parseInt(val)
    //   return num.toFixed(1)
    // }
  },
  methods: {
    setDrawbar() {
      this.isdrawbar_active = true;
    },
    removeDrawbar() {
      this.isdrawbar_active = false;
    },
    Enter() {
      clearTimeout(this.controlTimer);
      this.isShowControl = true;
      this.controlTimer = setTimeout(() => {
        this.isShowControl = false;
      }, 5000);
    },
    openDefintion() {
      //打开清晰度切换容器
      clearTimeout(this.defintionTimer)
      this.isShowDefintion = true;
      this.defintionTimer=setTimeout(() => {
        this.isShowDefintion = false;
      }, 3000);
    },
    chooseDefintion(defintion, index) {
      localStorage.setItem("flv_defintion", index);
      localStorage.setItem(
        "flv_defintion_currenttime",
        this.refDom.currentTime
      );
      //选择清晰度
      this.defintion = defintion;
      this.isShowDefintion = false;
      this.reloadUrl();
    },
    reloadUrl() {
      this.flv_destroy();
      this.initPlay();
    },
    openSpeed() {
      //打开播放速度容器
      clearTimeout(this.speedTimer)
      this.isShowSpeed = true;
      this.speedTimer=setTimeout(() => {
        this.isShowSpeed = false;
      }, 3000);
    },
    chooseSpeed(speed) {
      //选择播放速度
      this.refDom.playbackRate = speed;
      this.speed = speed;
      this.isShowSpeed = false;
    },
    setvolume(e) {
      //设置音量
      let dom = e.target;
      this.refDom.volume = dom.value / 100;
      localStorage.setItem("fly_volume", dom.value / 100);
      this.volume = dom.value;
    },
    slider(e) {
      //进度滑动设置
      let dom = e.target;
      this.currentDuration = (Number(dom.value) * this.duration) / 100;
      this.refDom.currentTime = this.currentDuration;
    },
 

    init(videoItem) {
      this.isLoaded=false;//播放器数据初始化能播放后再显示UI页面
      let url = "";
      this.refDom = document.getElementById("videoBody");
      if (!!!videoItem) return;
      url = videoItem.url;
 

      //flv播放器初始化
      window.cancelAnimationFrame(this.timer);
      if (flvjs.isSupported()) {
        this.flv_player_instance = flvjs.createPlayer(
          {
            seekType: "range",
            type: this.flvVideoCode,
            url: url
          }
          // { enableStashBuffer: false }
        );
        this.defintion = videoItem && videoItem.leavel;
        this.flv_player_instance.attachMediaElement(this.refDom);
        this.flv_player_instance.load(); //加载
        this.flv_player_instance.play();
        this.flv_player_instance.on("error", err => {
          // console.log('err', err);
          if (err == "MediaError") {
            if (this.flvVideoCode == "flv") {
              //如果是格式错误，尝试切换格式播放
              this.flvVideoCode = "mp4";
              console.warn("尝试切换mp4格式播放");
            } else {
              console.warn("尝试切换flv格式播放");
              this.flvVideoCode = "flv";
            }
            this.reloadUrl();
          }
        });
      }
    },
    flv_destroy() {
      if (this.flv_player_instance) {
        this.flv_player_instance.pause();
        this.flv_player_instance.unload();
        this.flv_player_instance.detachMediaElement();
        this.flv_player_instance.destroy();
        this.flv_player_instance = null;
      }
    },
    canplay(e) {
      this.isLoaded=true
      let currentTime = localStorage.getItem("flv_defintion_currenttime"); //保存上次进度，切换清晰度的时候还原进度
      //资源可以播放
      let dom = e.target;
      if (!!currentTime) {
        dom.currentTime = currentTime;
        localStorage.removeItem("flv_defintion_currenttime");
      }
      this.duration = dom.duration || 1;
 

      this.currentDuration = dom.currentTime || 0;
      dom.volume = localStorage.getItem("fly_volume") || 0.5;
      this.volume = dom.volume * 100;
      this.speed = dom.playbackRate.toFixed(1);
      dom.play();
      this.isLoading = false;
    },
    getCanvasInit() {
      //canvas初始化
      this.canvas = document.getElementById("canvas");
      this.context = canvas.getContext("2d");
      this.canvas.width = document.body.clientWidth;
      this.canvas.height = document.body.clientHeight;
      this.drawCanvas();
    },
    drawCanvas() {
      //绘制视频到canvas
      this.context.drawImage(
        this.refDom,
        0,
        0,
        this.canvas.width,
        this.canvas.height
      ); //绘制视频
      this.timer = window.requestAnimationFrame(this.drawCanvas);
    },
    play() {
      //播放暂停
      if (this.refDom.paused) {
        this.refDom.play();
        this.isPlay = false;
      } else {
        this.refDom.pause();
        this.isPlay = true;
      }
    },
    fullScreen() {
      if (this.isFixed=='fixed') {
        //如果全屏退出全屏
        this.isFixed = "relative";
        // this.isCanvas = false;
        // window.cancelAnimationFrame(this.timer);
      } else {
         this.isFixed = "fixed";
        // this.isCanvas = true;
        // this.getCanvasInit();
      }
    },
    ended(e) {
      this.$emit("flvEnded", true);
    },
    seeking(e) {
      // console.log(e);
      this.isLoading = true;
    },
    seeked(e) {
      this.isLoading = false;
 

      // console.log(e);
    },
    error(e) {
      let err = e.target.error;
      console.error(err);
 

      if (err.code == 4) {
        //error.code; //1.用户终止 2.网络错误 3.解码错误 4.URL无效
        if (this.flvVideoCode == "flv") {
          //如果是格式错误，尝试切换格式播放
          this.flvVideoCode = "mp4";
          console.warn("尝试切换mp4格式播放");
        } else {
          console.warn("尝试切换flv格式播放");
          this.flvVideoCode = "flv";
        }
        this.reloadUrl();
      }
      this.isLoading = false;
    },
    loadstart() {
      this.isLoading = true;
    },
    timeupdate(e) {
      //播放进度更新回调
      let dom = e.target;
      // 视频时长
      this.duration = dom.duration || 1;
      // currentTime 当前播放时长
      this.currentDuration = dom.currentTime;
      //当前缓冲进度时长结束位置
 

      if (dom.buffered.length != 0) {
        var currentBuffer = dom.buffered.end(0);
        var percentage = (100 * currentBuffer) / this.duration;
        this.getBuffPrecent = percentage;
      }
 

      this.getCurrentDurationPercent =
        (this.currentDuration / this.duration) * 100;
    },
    initPlay() {
      let defintion = localStorage.getItem("flv_defintion");
      if (!!defintion) {
        //如果本地保存了清晰度自动选择之前清晰度,否则加载第一个
        this.init(this.VideoUrl[defintion]);
      } else {
        this.init(this.VideoUrl[0]);
      }
    }
  },
  mounted() {
    // console.log(this.VideoUrl);
    if(this.VideoUrl.length==0){
      return  new Error('未输入地址')
    }
    this.flvVideoCode = this.VideoCode;
    this.initPlay();
  }
};
script>
<style scoped>
/*video样式*/
.video-box {
  top: 0;
  left: 0;
  overflow: hidden;
  background: #000;
  width: 100%;
  height: 100%;
  z-index: 99999;
}
.video-box-body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: relative;
}
.video-body {
  display: block;
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
  z-index: 15;
}
#canvas {
  width: 80%;
  left: 10%;
}
/*控制条样式*/
.video-control {
  display: flex;
  position: absolute;
  width: 100%;
  height: 60px;
  padding: 5px;
  line-height: 50px;
  background: rgba(0, 0, 0, 0.5);
  box-shadow: 0 1px 15px 15px rgba(0, 0, 0, 0.5);
  transition-duration: 300ms;
  z-index: 999999;
  left: 0;
  right: 0;
  bottom: 0;
}
.control-leftview {
  display: flex;
  position: relative;
  z-index: 5;
  width: 120px;
}
.control-btn {
  display: inline-block;
  width: 50px;
  height: 50px;
  background: rgba(256, 256, 256, 0.5);
  cursor: pointer;
}
.control-leftview .control-btn {
  margin-right: 10px;
}
.progress-box {
  width: 100%;
  height: 50px;
  padding-right: 60px;
}
.progress-box-body {
  display: flex;
 

  width: 100%;
  height: 100%;
}
.current-time,
.duration-time {
  width: 60px;
  text-align: center;
  color: #fff;
}
.current-time {
  margin-right: -60px;
  position: relative;
  z-index: 5;
}
.duration-time {
  margin-left: -60px;
  position: relative;
  z-index: 5;
}
.durationbar-box {
  position: relative;
  width: 100%;
  padding: 0 70px;
}
.durationbar {
  width: 100%;
  height: 6px;
  margin-top: 23px;
  background: #26bef5;
  border-radius: 50px;
  position: relative;
}
.bufferbar,
.currentbar {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 0;
  background: rgba(0, 0, 0, 0.5);
  border-radius: 50px;
  z-index: 5;
  cursor: pointer;
}
.currentbar {
  background: #fff;
  z-index: 10;
}
.drawbar {
  position: absolute;
  background: #fff;
  width: 20px;
  height: 20px;
  left: 0;
  top: -5px;
  z-index: 10;
  margin-left: -4px;
  border-radius: 50px;
  cursor: pointer;
  background-color: transparent;
  background-image: url("../assets/image/thumbs-sprite.png");
  background-position: 0 0;
  background-size: cover;
  transform: scale(1.9) rotateZ(10deg);
}
.drawbar_active {
  background-position: 100% 0px;
}
.control-rightview {
  cursor: pointer;
  display: flex;
  position: relative;
  /* width: 150px; */
  z-index: 5;
}
.speed {
  width: 40px;
  color: #fff;
  font-size: 16px;
}
.defintion {
  color: #fff;
  font-size: 14px;
  width: 100px;
}
.isActive {
  color: coral;
}
.leavel {
  cursor: pointer;
}
.speed-wrap {
  position: absolute;
  bottom: 50px;
  left: 44px;
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  padding: 0 10px;
  border-radius: 6px;
  line-height: 30px;
  font-size: 16px;
}
.defintion-wrap {
  position: absolute;
  bottom: 50px;
  left: -10px;
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  padding: 0 10px;
  border-radius: 6px;
  line-height: 30px;
  font-size: 16px;
}
.control-rightview .control-btn {
  margin-left: 10px;
}
.control-leftview .control-btn:last-child,
.control-rightview .control-btn:first-child {
  margin: 0;
}
.control-btn.loadbtn {
  /* background: url(../img/load.png) no-repeat center; */
  background-size: 100%;
}
.control-btn.playbtn {
  background: url("../assets/image/pause.png") no-repeat center;
  background-size: 100%;
}
.control-btn.playbtn.pausebtn {
  background: url("data:image/svg+xml;base64,PHN2ZyBmaWxsPSIjZmZmZmZmIiBoZWlnaHQ9IjI0IiB2aWV3Qm94PSIwIDAgMjQgMjQiIHdpZHRoPSIyNCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxwYXRoIGQ9Ik04IDV2MTRsMTEtN3oiLz4KICAgIDxwYXRoIGQ9Ik0wIDBoMjR2MjRIMHoiIGZpbGw9Im5vbmUiLz4KPC9zdmc+Cg==")
    no-repeat center;
 

  background-size: 100%;
}
.control-btn.mutedbtn {
  background: url("data:image/svg+xml;base64,PHN2ZyBmaWxsPSIjZmZmZmZmIiBoZWlnaHQ9IjI0IiB2aWV3Qm94PSIwIDAgMjQgMjQiIHdpZHRoPSIyNCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxwYXRoIGQ9Ik0zIDl2Nmg0bDUgNVY0TDcgOUgzem0xMy41IDNjMC0xLjc3LTEuMDItMy4yOS0yLjUtNC4wM3Y4LjA1YzEuNDgtLjczIDIuNS0yLjI1IDIuNS00LjAyek0xNCAzLjIzdjIuMDZjMi44OS44NiA1IDMuNTQgNSA2Ljcxcy0yLjExIDUuODUtNSA2LjcxdjIuMDZjNC4wMS0uOTEgNy00LjQ5IDctOC43N3MtMi45OS03Ljg2LTctOC43N3oiLz4KICAgIDxwYXRoIGQ9Ik0wIDBoMjR2MjRIMHoiIGZpbGw9Im5vbmUiLz4KPC9zdmc+Cg==")
    no-repeat center;
  background-size: 100%;
}
.control-btn.fullscreenbar {
  background: url("data:image/svg+xml;base64,PHN2ZyBmaWxsPSIjZmZmZmZmIiBoZWlnaHQ9IjI0IiB2aWV3Qm94PSIwIDAgMjQgMjQiIHdpZHRoPSIyNCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxwYXRoIGQ9Ik0wIDBoMjR2MjRIMHoiIGZpbGw9Im5vbmUiLz4KICAgIDxwYXRoIGQ9Ik03IDE0SDV2NWg1di0ySDd2LTN6bS0yLTRoMlY3aDNWNUg1djV6bTEyIDdoLTN2Mmg1di01aC0ydjN6TTE0IDV2MmgzdjNoMlY1aC01eiIvPgo8L3N2Zz4K")
    no-repeat center;
  background-size: 100%;
}
.bar-input {
  position: absolute;
  height: 100%;
  left: 0;
  right: 0;
  margin: auto;
  width: 100%;
  opacity: 0;
  z-index: 999;
  cursor: pointer;
}
.volume-input {
  height: 100%;
  width: 100%;
  /* opacity: 0; */
  z-index: 999;
  cursor: pointer;
}
.loader {
  width: 140px;
  height: 140px;
  /* border: 1px solid red; */
  text-align: center;
  position: absolute;
  top: calc(50% - 70px);
  left: calc(50% - 70px);
  padding-top: 15px;
  z-index: 9999;
  background-color: rgba(0, 0, 0, 0.5);
  border-radius: 5px;
}
 

#loader-1 {
  width: 60px;
  height: 60px;
}
svg path,
svg rect {
  fill: #17a085;
}
.load-msg {
  height: 50px;
  line-height: 50px;
  color: #fff;
  font-size: 13px;
  /* margin-top: 20px; */
}
.volume-input {
  /*-webkit-box-shadow: 0 1px 0 0px #424242, 0 1px 0 #060607 inset, 0px 2px 10px 0px black inset, 1px 0px 2px rgba(0, 0, 0, 0.4) inset, 0 0px 1px rgba(0, 0, 0, 0.6) inset;*/
  -webkit-appearance: none; /*去除默认样式*/
  margin-top: 24px;
  background-color: #ebeff4;
  /*border-radius: 15px;*/
  -webkit-appearance: none;
  height: 4px;
  padding: 0;
  border: none;
  outline: none;
  /*input的长度为80%，margin-left的长度为10%*/
}
.volume-input::-webkit-slider-thumb {
  -webkit-appearance: none; /*去除默认样式*/
    cursor: pointer;
  top: 0;
  height: 20px;
  width: 20px;
  transform: translateY(0px);
  background: #fff;
  border-radius: 15px;
  border: 5px solid #006eb3;
  /*-webkit-box-shadow: 0 -1px 1px #fc7701 inset;*/
}
video:-webkit-full-screen {
  z-index: 9 !important;
  width: 100% !important;
  height: 100% !important;
}
video::-webkit-media-controls {
  display: none !important;
}
.video-progress {
  position: absolute;
  width: 100%;
  left: 0;
  bottom: 0;
  height: 4px;
  z-index: 999999;
}
.video-progress-current {
  position: absolute;
  width: 0%;
  left: 0;
  bottom: 0;
  height: 4px;
  border-radius: 2px;
  background: tomato;
}
style>