vue实现步进器

实现基础步进器组件

在Vue中实现步进器可以通过v-for动态渲染步骤，结合v-bind和v-on控制状态。基础模板示例：

<template>
  <div class="stepper">
    <div 
      v-for="(step, index) in steps" 
      :key="index"
      :class="{ 'active': currentStep === index, 'completed': currentStep > index }"
      @click="setStep(index)"
    >
      {{ step.label }}
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      currentStep: 0,
      steps: [
        { label: 'Step 1' },
        { label: 'Step 2' },
        { label: 'Step 3' }
      ]
    }
  },
  methods: {
    setStep(index) {
      this.currentStep = index
    }
  }
}
</script>

<style>
.stepper {
  display: flex;
  justify-content: space-between;
}
.stepper div {
  padding: 10px;
  border: 1px solid #ccc;
}
.stepper .active {
  background-color: #42b983;
}
.stepper .completed {
  background-color: #e8f5e9;
}
</style>

添加导航按钮控制

扩展功能增加前进/后退按钮，并添加步骤验证逻辑：

<template>
  <div>
    <!-- 步骤指示器 -->
    <div class="stepper">...</div>

    <!-- 步骤内容 -->
    <div class="step-content">
      <div v-if="currentStep === 0">Step 1 Content</div>
      <div v-else-if="currentStep === 1">Step 2 Content</div>
      <div v-else>Step 3 Content</div>
    </div>

    <!-- 导航按钮 -->
    <button 
      :disabled="currentStep === 0"
      @click="prevStep"
    >
      Previous
    </button>
    <button 
      :disabled="currentStep === steps.length - 1 || !canProceed"
      @click="nextStep"
    >
      Next
    </button>
  </div>
</template>

<script>
export default {
  data() {
    return {
      canProceed: false,
      // 其他数据...
    }
  },
  methods: {
    nextStep() {
      if (this.currentStep < this.steps.length - 1) {
        this.currentStep++
      }
    },
    prevStep() {
      if (this.currentStep > 0) {
        this.currentStep--
      }
    }
  }
}
</script>

使用Vue过渡效果

为步骤切换添加平滑过渡效果：

<transition name="fade" mode="out-in">
  <div :key="currentStep" class="step-content">
    <!-- 动态内容 -->
  </div>
</transition>

<style>
.fade-enter-active, .fade-leave-active {
  transition: opacity 0.3s;
}
.fade-enter, .fade-leave-to {
  opacity: 0;
}
</style>

完整组件封装方案

将步进器封装为可复用组件，通过props接收配置：

// Stepper.vue
export default {
  props: {
    steps: {
      type: Array,
      required: true,
      validator: value => value.every(step => 'label' in step)
    },
    initialStep: {
      type: Number,
      default: 0
    }
  },
  data() {
    return {
      currentStep: this.initialStep
    }
  },
  // 其他方法...
}

状态管理集成

对于复杂应用，建议使用Vuex管理步进器状态：

// store.js
const store = new Vuex.Store({
  state: {
    currentStep: 0,
    steps: ['info', 'payment', 'confirmation']
  },
  mutations: {
    SET_STEP(state, index) {
      state.currentStep = index
    }
  }
})

// 组件中使用
this.$store.commit('SET_STEP', newIndex)