How to trigger click on ref in Vue.js

Question

I have a list

<li v-for="menu_item, key in menu" @click="clickMenu(key)" :ref="'menu'+key">
  {{menu_item.name}}
</li>

And in my vue I have

mounted(){
   // This shows the $refs as being mounted and available
   console.log(this.$refs)
   console.log(this.$refs.menu1)
   // Click menu item 2 seconds after mounting
   this.$refs.menu1.click()
   // click is UNDEFINED

},
methods: {
   clickMenu:function(key){
      console.log("CLICKED "+key)
   },
}

I get "Cannot read property 'click' of undefined"

How do I simply just trigger a click on the element programmatically?

Another answer on Github says I should do ...

 this.$refs.menu1.$el.click()

But that isn't defined either ??

Heres a JSFiddle Hopefully someone can figure it out JSFIDDLE HERE!!

Answer 1

There may a couple of small issues with your code. The context of this inside setTimeout() when using function() {} is not what you are expecting. To preserve the context of this to be able to access $refs and similar component properties/functions, use an arrow function instead () => {} .

The next issue is accessing the underlying element of a ref such as menu1 . I've provided an example below, but logging this.$refs.menu1 returns an array of elements [<li>] . You would need to do something along the lines of this.$refs.menu1[0] to access the underlying element (there be a more "Vue" way of doing this though):

{
  // ...
  methods: {
    handleClick(key) {
      console.log(key);
    }
  },
  mounted() {
    console.log(this.$refs);
    console.log(this.$refs.menu1[0]);
    console.log(this);
    setTimeout(() => {
        console.log(this);
        this.$refs.menu1[0].click();
    }, 2000);
  }
}

Here is an example in action.

Hopefully that helps!

Answer 2

如果您的目标是单击菜单的第一项，只需调用 clickMenu 方法并发送索引，在这种情况下，它将是 clickMenu(0)。