源代码 ：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Vue 测试实例 - 开源教程(ossoft.cn)</title> <script src="https://unpkg.com/vue@next"></script> <style> .static { width: 100px; height: 100px; } .active { background: green; } .text-danger { background: red; } </style> </head> <body> <div id="app"> <div class="static" :class="[isActive ? activeClass : '', errorClass]"></div> </div> <script> const app = { data() { return { isActive: false, activeClass: 'active', errorClass: 'text-danger' } } } Vue.createApp(app).mount('#app') </script> </body> </html>
运行结果