v-bind绑定class

数组语法

<div v-bind:class="[activeClass, errorClass]"></div>

data: {
  activeClass: 'active',
  errorClass: 'text-danger'
}

对象语法

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

data: {
  isActive: true,
  hasError: false
}

对象与数组混用

<div v-bind:class="[activeClass, {active: isActive}]></div>

data: {
  activeClass: 'active',
  isActive: true
}