vue $nexttick

$nextTick is a method in Vue.js that schedules a callback function to be executed after the next DOM update cycle. It's useful when you want to wait for the DOM to update before performing some action or accessing some data.

Here's an example:

// template
<template>
  <div>
    <button @click="increment">{{ count }}</button>
    <p>{{ message }}</p>
  </div>
</template>

// script
export default {
  data() {
    return {
      count: 0,
      message: ''
    }
  },
  methods: {
    increment() {
      this.count++
      this.$nextTick(() => {
        this.message = `You clicked the button ${this.count} times.`
      })
    }
  }
}

In this example, we have a button that increments a counter when clicked. After the counter is updated, we use $nextTick to set the message to a string that includes the current count. By using $nextTick, we ensure that the message is updated after the DOM has been updated with the new count.