vue-router路由跳转，实现target: _blank，单独打开一个标签页

let { href } = this.$router.resolve({ path: '/help-center' })
window.open(href, '_blank')

<div class="item-fore7 cur">注册即代表同意
      <router-link tag="a" target="_blank" to="/register-agreementa">《注册协议》</router-link>
</div>