Vue を使用してジェスチャ パスワード効果を実装する方法

<template>
  <div class="gesture-password">
    <div v-for="n in 9" :key="n" class="point" :class="{'point-selected': selectedPoints.includes(n)}" @touchstart="touchStart(n)" @touchmove="touchMove(n)" @touchend="touchEnd(n)"></div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      selectedPoints: []
    };
  },
  methods: {
    touchStart(n) {
      this.selectedPoints = [n];
    },
    touchMove(n) {
      if (!this.selectedPoints.includes(n)) {
        this.selectedPoints.push(n);
      }
    },
    touchEnd() {
      // 处理手势密码结束事件
    }
  }
};
</script>

<style>
.gesture-password {
  display: flex;
  flex-wrap: wrap;
  width: 300px;
  height: 300px;
  margin: 0 auto;
}

.point {
  flex-basis: 32%;
  height: 30%;
  margin: 5px;
  background-color: #ccc;
  border-radius: 50%;
}

.point-selected {
  background-color: #ff0000;
}
</style>

props: {
  callback: {
    type: Function,
    required: true
  }
}

touchEnd() {
  this.callback(this.selectedPoints);
}

<template>
  <div class="home">
    <gesture-password :callback="checkPassword"></gesture-password>
    <div v-if="password">
      <p>您输入的手势密码是：</p>
      <p>{{ password.join(', ') }}</p>
      <p>{{ message }}</p>
    </div>
  </div>
</template>

<script>
import GesturePassword from './components/GesturePassword.vue';

export default {
  components: {
    GesturePassword
  },
  data() {
    return {
      password: null,
      message: ''
    };
  },
  methods: {
    checkPassword(selectedPoints) {
      if (selectedPoints.length < 4) {
        this.password = null;
        this.message = '手势密码长度不能少于4个点！';
      } else {
        this.password = selectedPoints;
        this.message = '手势密码验证通过！';
      }
    }
  }
};
</script>

<style>
.home {
  text-align: center;
  margin: 100px auto;
}
</style>