How to setTimeout in Vue?

Question

Vue.js

Hello. Do not judge strictly, I'm at the very beginning of learning vue, but in a combat project.
There is a Home.vue main page. There was a button that calls the method that opens the modal

methods: {
            showFirstModal() {
                this.$store.commit("showModal", {
                    name: "сallToRegistrationModal",
                    props: null,
                    isShown: true,
                });
            },
    }

Now, the button is removed. And the Method needs to be launched similarly with setTimeout 20 seconds after the component is created. But I don't understand how to do it. Looks like I screwed up, but it doesn't work. They advised using the mounted hook, but I didn’t figure out how, because. has not yet reached the hooks in the study.
Tell me, plz.

Answer 1

mounted() {
    setTimeout(() =>{
      this.showFirstModal()
    }, 20000)
  },