返回上一页用的是
this.$router.go(-1)
那么只能在返回之前将参数放在localStorage里面
localStorage.setItem('searchKeyword', this.keyword)
返回上一页面之后,拿到数据,再清空localStorage
let searchKeyword = localStorage.getItem('searchKeyword')
localStorage.setItem('searchKeyword', '')
参考链接