第一种:(最简单的绑定)
1.绑定单个class
html部分:
<div :class="{'active':isActive}"></div>
js部分:判断是否绑定一个active
data() { return { isActive: true }; }
结果渲染为:
<div class="active"></div>
2.若要绑定多个class,需要逗号隔开就行:(这里的activeTwo加不加引号都可以,也一样都能渲染,如下)
<div class="activeOne" v-bind:class="{ activeTwo: isActive, 'activeThree': hasError }"></div>
js部分:判断是否绑定对应class
data() { return { isActive: true, hasError: true }; }
结果渲染为:
<div class="activeOne activeTwo activeThree"></div>
第二种:(绑定的数据对象)
<div :class="classObject"></div>
data: { classObject: { active: true, } }
<div :class="classObject"></div>
export default { data() { return { isActive: true, }; }, computed: { classObject: function () { return { active: this.isActive, } } }
结果渲染为:
<div class="active"></div>
第四种:(单纯数组方法)
<div :class="[activeClass, errorClass]"></div>
data() { return { activeClass: "active", errorClass: "disActive" }; },
结果渲染为:
<div class="active disActive"></div>
第五种:(数组与三元运算符结合判断选择需要的class)
<div :class="[isActive?'active':'disActive']"></div>
data() { return { isActive: false, }; },
结果渲染为:
<div class="disActive"></div>