vue 自定義指令自動獲取文本框焦點的方法

<p><b v-show="show">{{tag}}</b><input v-focus v-model="tag" :hidden="show" type="text"></p>

directives: {
 focus: {
 // 指令的定義
 inserted: function (el) {
 el.focus()
 }
 }
 }

directives: {
 focus:function (el) {
 el.focus();
 }
 }

<el-input v-model="data.carDealerJobs.bankDetail" v-focus placeholder="請輸入內容" size="small"></el-input>

 directives: {
 focus: {
 inserted: function (el) {
 el.children[0].focus()
 }
 }
 }