<el-button type="text" @click="dialogVisible = true" v-text="Open Dialog" />

<el-dialog
  title="I am a dialog"
  :visible.sync="dialogVisible"
  width="50%">
  <span>You could play with the html here</span>
  <p v-for="message in messages" v-html="message" />
</el-dialog>

<script>
  export default {
    data() {
      return {
        dialogVisible: false,
        messages: ["Message one", "Second message"]
      };
    }
  };
</script>