<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Vue 测试实例</title> <style> .class1 { background: #444; color: eee; } </style> <script src=https://unpkg.com/vue/dist/vue.js"></script> </head> <body> <div id=app"> <input type="text" v-model="textss"> <!--<button @click="sub">提交</button>-->
</div> <script> var vm = new Vue({ el: '#app',data: { textss:"" 监听属性 watch:{ textss(old_data,new_data){ if (old_data.search("逼") != -1 || old_data.search("你") != -1){ var text = old_data.slice(0,-1); var text_c = text + "*" this.textss = text_c } }, },}) </script> </body> </html>