单击span class =“before-click”时,
我希望它隐藏起来,输入class =“after-click”代替
并且显示的输入标签必须是聚焦的!
问题是当我尝试使用$ refs.afterClick访问该DOM并给它.focus()时,意外错误显示.focus()不是函数。
如何解决这个问题?
感谢。
var myApp = new Vue({
el: '#app',
data: {
onEdit: false,
msg: 'Something in here',
},
methods: {
switchAndFocus() {
if(!this.onEdit) {
this.onEdit = true;
this.$refs.afterClick.focus();
}
},
},
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.3/vue.min.js"></script>
<div id="app">
<span class="before-click" @click="switchAndFocus()" v-show="!onEdit">{{msg}}</span>
<input type="text" class="after-click" ref="afterClick" :value="msg" v-show="onEdit">
</div>
答案 0 :(得分:13)
将焦点事件包装在nextTick中 - 这将推迟焦点事件,直到DOM更新并显示输入。
https://vuejs.org/v2/api/#Vue-nextTick
var myApp = new Vue({
el: '#app',
data: {
onEdit: false,
msg: 'Something in here',
},
methods: {
switchAndFocus() {
if(!this.onEdit) {
this.onEdit = true;
this.$nextTick(function(){
this.$refs.afterClick.focus();
});
}
},
},
});
&#13;
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.3/vue.min.js"></script>
<div id="app">
<span class="before-click" @click="switchAndFocus()" v-show="!onEdit">{{msg}}</span>
<input type="text" class="after-click" ref="afterClick" :value="msg" v-show="onEdit">
</div>
&#13;
答案 1 :(得分:-1)
另一个技巧是设置超时(使用setTimeout),直到重新渲染完成为止(此处是一个示例):
<input type="text" ref="input" >
methods: {
setFocus: function() {
// Note, you need to add a ref="input" attribute to your input.
this.$refs.input.focus();
},
created() {
setTimeout(x => {
this.$nextTick(() => this.setFocus()); // just watch out with going too fast !!!
}, 1000);