1.class

(1)基本

<div v-bind:class="{ active: isActive }"></div>

（2）绑定多个class

<div class="static"
    v-bind:class="{ active: isActive, 'text-danger': hasError }">
</div>
data: {
    isActive: true,
    hasError: false
}
//result
<div class="static active"></div>

（3）绑定对象

<div v-bind:class="classObject"></div>
//数据
data: {
  isActive: true,
  error: null
},
computed: {
  classObject: function () {
    return {
      active: this.isActive && !this.error,
      'text-danger': this.error && this.error.type === 'fatal',
    }
  }
}

（4）绑定数组

<div v-bind:class="[activeClass, errorClass]">
data: {
    activeClass: 'active',
    errorClass: 'text-danger'
}
//result
<div class="active text-danger"></div>
//如果想切换class
<div v-bind:class="[isActive ? activeClass : '', errorClass]">
//也可以用对象的语法
<div v-bind:class="[{ active: isActive }, errorClass]">

2.style

(1)直接绑定

<div v-bind:style="{ color: activeColor, fontSize: fontSize + 'px' }"></div>
data: {
   activeColor: 'red',
   fontSize: 30
}

（2）绑定对象

<div v-bind:style="styleObject"></div>
data: {
   styleObject: {
       color: 'red',
      fontSize: '13px'
    }
}

(3)数组语法

<div v-bind:style="[baseStyles, overridingStyles]">

(4)自动补全
比如transform会自动添加兼容性处理