   if (!localStorage.isOldUser) {
        let isPhone = false
        for (let name of ["Android", "iPhone", "SymbianOS", "Windows Phone", "iPad", "iPod"]) {
          if (navigator.userAgent.indexOf(name) > -1) {
            isPhone = true
          }
        }
        console.log(isPhone?'手机用户':'电脑用户')
        if (isPhone) {
          alert('NER中,双击删除实体\n待标注文本需要txt格式的压缩包')
        } else {
          alert('NER中,鼠标右键删除实体\n待标注�