how to get attr in vuejs

<template>
  <div>
    <button v-bind:id="buttonId">Click me</button>
  </div>
</template>

<script>
export default {
  data() {
    return {
      buttonId: 'myButtonId'
    };
  },
  mounted() {
    const buttonElement = this.$el.querySelector('button');
    const buttonId = buttonElement.getAttribute('id');
    console.log('Button ID:', buttonId);
  }
};
</script>