实例如下所示： <template><div><span :class="{bg-primary text-danger:isA,bg-success text-white:!isA}" @click="toggle()">AAAAA</span></div> </template> <script>export default {name: hello,data () {return {isA: false}},methods:{toggle:function () {this.isA=!this.isA}}} </script> <style scoped>@import "../../../src/assets/plugin/bootstrap-4.0.0-alpha.6-dist/css/bootstrap.css"; </style>以上这篇vue togg...