vue3之跳转页面时判断是否跳转

onBeforeRouteLeave((to, from, next) => (
  if (ruleAllChange .value）{
    ElMessageBoxconfirm(
      "数据未保存，请问是否继续跳转？",
      "确认"
      {confirmButtonText:"确认',cancelButtonText:取消'type: "warning”}
    ).then(() => {
       next();  // 继续跳转
     .catch(() => [
       //  不跳转
  } else {
    next();
  }
})