Vue+CSS3實(shí)現(xiàn)轉(zhuǎn)盤抽獎

  Prize number: {{ prizeNumber }}
  Add
  Remove
   

    

      Start
    
    

      

        

          

            

              {{ item.name }}
            
            

              
            
          
        
      
    
  

html {
   background: #DD7C7D;
}

.wheel-wrapper {
    width: 300px;
    height: 300px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
  }

  .wheel-pointer {
    width: 60px;
    height: 60px;
    border-radius: 1000px;
    background: yellow;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    line-height: 60px;
    z-index: 10;
  }
  .wheel-bg {
    width: 100%;
    height: 100%;
    border-radius: 1000px;
    overflow: hidden;
    transition: transform 4s ease-in-out;
    background: #7EEF97;
    
    &.freeze {
      transition: none;
      background: red;
    }
  }

  .prize-list {
    width: 100%;
    height: 100%;
    position: relative;
    text-align: center;
  }

  .prize-item-wrapper {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 150px;
    height: 150px;
  }

  .prize-item {
    width: 100%;
    height: 100%;
    transform-origin: bottom;

    .prize-name {
      padding: 16px 0;
    }

    .prize-icon {}
  }

var Main = {
  data() {
    return {
      freeze: false,
      rolling: false,
      wheelDeg: 0,
      prizeNumber: 8,
      prizeListOrigin: [
        {
          icon: "https://picsum.photos/40?random=1",
          name: "$10000"
        },
        {
          icon: "https://picsum.photos/40?random=6",
          name: "Thank you!"
        },
                {
          icon: "https://picsum.photos/40?random=2",
          name: "$500"
        },
        {
          icon: "https://picsum.photos/40?random=3",
          name: "$100"
        },
                {
          icon: "https://picsum.photos/40?random=6",
          name: "Thank you!"
        },
        {
          icon: "https://picsum.photos/40?random=4",
          name: "$50"
        },
        {
          icon: "https://picsum.photos/40?random=5",
          name: "$10"
        },
        {
          icon: "https://picsum.photos/40?random=6",
          name: "Thank you!"
        }
      ]
    };
  },
  computed: {
    prizeList () {
      return this.prizeListOrigin.slice(0, this.prizeNumber)
    }
  },
  methods: {
    onClickRotate() {
      if (this.rolling) {
        return;
      }
      this.rolling = true;
      const { wheelDeg, prizeList } = this;
      const random = Math.floor(Math.random() * (prizeList.length ));
      console.log(random);
      this.wheelDeg =
        wheelDeg -
        wheelDeg % 360 +
        6 * 360 +
        (360 - 360 / prizeList.length * random);
      setTimeout(() => {
        this.rolling = false;
        alert("Result：" + prizeList[random].name);
      }, 4500);
    }
  },
  watch: {
    prizeNumber () {
      this.freeze = true
      this.wheelDeg = 0
     
      setTimeout(() => {
         this.freeze = false
      }, 0)
    }
  }
};
var App = Vue.extend(Main);
new App().$mount("#app");