copyToClipboard.vue

<template>
<div>
<input id="copy-text" value="copy text" />
</div>
</template>

<script>
export default {
  methods: {
    copyToClipboard: function() {
      const target = document.querySelector('#copy-text');
      target.select();

      const result = document.execCommand('copy');
      console.log('copy clipboard', result);
    }
  }
}
</script>