<div class="container" id="app">
    <div class="input-group-prepend">
      <span class="input-group-text">.str file</span>
    </div>
    <div class="input-group">
      <textarea v-model="strdata" class="form-control"></textarea>
    </div>
    <div class="btn-group m-4" role="group">
      <button type="button" class="btn btn-primary" v-on:click="goClick">.str convert to .tbl</button>
    </div>
    <div class="input-group-prepend">
      <span class="input-group-text">.tbl file</span>
    </div>
    <div class="input-group">
      <textarea v-model="tbldata" class="form-control"></textarea>
    </div>
  </div>