javascript - 对象不是构造函数 Protractor Javascript

Question

我不断收到这样的消息，说 Newpage 不是构造函数 我在过去 5 小时内绞尽脑汁试图解决此问题，但没有任何进展 我查看了以下网站 How to call a function in another function in protractor

'TypeError: undefined is not a function' using Protractor也许这是我不知道的简单事情。我想做的就是从我的页面对象文件中调用一个函数。仍然没有成功任何帮助将不胜感激。

我的代码:

var newPage = require('./newPage.js');

describe('Get Payroll Information', function() {

  beforeAll(function(){
        var newPageObj = new newPage();
    });

          var EC = protractor.ExpectedConditions;
          var status;
          var clientid, weeknum, pdate;


it('Get CycleStatus, Paydate, Weeknumber, Clientid - completed', function () {
              const fs = require('fs');
              const cycle = $('#cycleStatusID'); // cycle status
              const client = $('#clientID'); // clientid
              const week = $('#companyIdBar_weekId'); // week number
              const payDate = $('#companyIdBar_processDateId');


                //------------Get PayDate --------------------------------
                              .then(() => {
                              payDate.isPresent().then(function(present){
                                if(present){
                                       payDate.getText().then(function(text){
                                         pDate = text;
                                        console.log('paydate (' + pDate + ') is displayed');
                                      });
                                          } else {
                                            console.log('pay date not present');
                                            //return;// breaks for loop like (break)
                                        }
                                      })
                                    })
                                  .then(() => {
                                      writeValueToFile(cycleStatus,clientID,weekNum,pDate);
                                  })
                                  .then(() => {
                                      newPageObj.goBack();
                                      console.log('return to support');
                                  });


                    });// master then promise

              });//spec function

Protractor 控制台消息

newPage.js 代码:

newPage = function(){
    function goBack(){
      var returnbtn = $('#returnToADPClick');
      var search1 = ($$('input[id="toolbarQuickSearch"]').get(0));
      returnbtn.click();
      browser.wait(EC.elementToBeClickable(search1),20,000);
};
};
module.exports = new newPage();

改为 module.exports = new newPage;//现在我明白了

Answer 1

您的newPage.js正在导出一个对象，而不是函数/类/构造函数。将 module.exports 更改为 newPage，如下所示:

newPage = function(){
    function goBack(){
      var returnbtn = $('#returnToADPClick');
      var search1 = ($$('input[id="toolbarQuickSearch"]').get(0));
      returnbtn.click();
      browser.wait(EC.elementToBeClickable(search1),20,000);
};
};
module.exports = newPage;