<div class="inputStyle">
   <input
     oninput="if(value.length>11)value=value.slice(0,11)"
     v-model="codeParams.mobile"
     placeholder="请输入手机号"
     type="number"
   />
 </div>

 <div class="content-item">
   <div class="label">购买金额:</div>
   <input
     type="number"
     v-model="params.amount"
     v-on:input="ipsEvent"
     placeholder="请输入提质金额,单位元"
   />
 </div>



<script>
  ipsEvent(e) {
    
    
    console.log(e, "我是输入");
  }
</script>