Vue template syntax - keyboard event modifier

First, the keyboard modifiers

在JavaScript事件中除了前面所说的事件，还有键盘事件，也经常需要监测常见的键值。在Vue中允许v-on在监听键盘事件时添加关键修饰符。记住所有的keyCode比较困难，所以Vue为最常用的键盘事件提供了别名：

• enter: Enter key
• tab: tab key
• delete: delete and backspace keys with
• esc: return key
• space: Spacebar
• up: up key
• down: DOWN ARROW
• left: Left arrow
• right: the right to

Note: keyboard modifiers to be added to the label bound keyup event name, then add keyboard modifiers

For example:. @Keyup modifier = "Method" => @keyup.enter="handle"

    v-on:keyup.修饰符="方法" => `v-on:keyup.enter="handle"`

Two, enter modifiers

1. .enter clicking enterkeys trigger the binding method

2. example
   <div id="app"> <form action="" method="post"> <div> <input type="text" v-model="uname"/> </div> <div> <input type="password" v-model="pwd" @keyup.enter="handleSubmit"/> </div> <div> <input type="button" @click="handleSubmit" value="提交"> </div> </form> </div> <script src="../js/vue.js"></script> <script> var vm = new Vue({ el: "#app", data: { uname:'', pwd:'' }, methods: { handleSubmit:function(){ console.log(this.uname,this.pwd); } } }) </script>

   ## three, delete modifiers
   1. .delete clicking deletekeys trigger the binding method
   2. example

       <div id="app">
           <form action="" method="post">
               <div>
                   <input type="text" v-model="uname" v-on:keyup.delete="clearContent"/>
               </div>
               <div>
                   <input type="password" v-model="pwd" @keyup.enter="handleSubmit"/>
               </div>
               <div>
                   <input type="button" @click="handleSubmit" value="提交">
               </div>
           </form>
       </div>
       <script src="../js/vue.js"></script>
       <script>
           var vm = new Vue({
               el: "#app",
               data: {
                   uname:'',
                   pwd:''
               },
               methods: {
                   handleSubmit:function(){
                       console.log(this.uname,this.pwd);
                   },
                   clearContent:function(){
                       this.uname = '';
                   }
               }
           })
       </script>