Question

我想在函数“ reader.onload = function show（event）”之外获得this.txt变量。.im试图在此处“ .query”中调用此变量，但我只能得到未定义的值

      _deleteNoDo(int index) async {
        debugPrint("Deleted Item!");
        setState(() {
          cardList.removeAt(index);
        });
      }

Answer 1

您需要将//Testing File let chai = require('chai'); let expect = require('chai').expect; let request = require('request'); let app = require('../app'); let should = chai.should(); describe('/GET wallet', () => { it('object should have these properties', (done) => { request('http://localhost:3000/theFunction' ,function(error,res,req) { expect(res.body).to.have.property('name') done(); }); }); });绑定到实例，或者使用箭头形式：

showFile()

如何在“ reader.onload =函数显示（事件）”之外调用this.txt变量

1 个答案: