详解VueJs中的V-bind指令

<!-- 完整语法 -->
<a v-bind:href="url"></a>
<!-- 缩写 -->
<a :href="url"></a>

<!-- 绑定一个属性 -->
<img v-bind:src="imageSrc">
<!-- 缩写 -->
<img :src="imageSrc">
<!-- 内联字符串拼接 -->
<img :src="'/path/to/images/' + fileName">
<!-- class 绑定 -->
<div :class="{ red: isRed }"></div>
<div :class="[classA, classB]"></div>
<div :class="[classA, { classB: isB, classC: isC }]">
<!-- style 绑定 -->
<div :style="{ fontSize: size + 'px' }"></div>
<div :style="[styleObjectA, styleObjectB]"></div>
<!-- 绑定一个有属性的对象 -->
<div v-bind="{ id: someProp, 'other-attr': otherProp }"></div>
<!-- 通过 prop 修饰符绑定 DOM 属性 -->
<div v-bind:text-content.prop="text"></div>
<!-- prop 绑定。“prop”必须在 my-component 中声明。-->
<my-component :prop="someThing"></my-component>
<!-- 通过 $props 将父组件的 props 一起传给子组件 -->
<child-component v-bind="$props"></child-component>
<!-- XLink -->
<svg><a :xlink:special="foo"></a></svg>

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

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

data: {
 isActive: true,
 hasError: false
}

<div class="static active"></div>

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

<div v-bind:class="classObject"></div>

data: {
 isActive: true,
 error: null
},
computed: {
 classObject: function () {
 return {
  active: this.isActive && !this.error,
  'text-danger': this.error && this.error.type === 'fatal'
 }
 }
}

<div v-bind:class="[activeClass, errorClass]"></div>
data: {
 activeClass: 'active',
 errorClass: 'text-danger'
}

<div class="active text-danger"></div>

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

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

Vue.component('my-component', {
 template: '<p class="foo bar">Hi</p>'
})

<my-component class="baz boo"></my-component>

<p class="foo bar baz boo">Hi</p>

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

<p class="foo bar active">Hi</p>

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

<div v-bind:style="styleObject"></div>

data: {
 styleObject: {
 color: 'red',
 fontSize: '13px'
 }
}

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