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我希望有人可以向我解释AngularJS中的"它"(用于)或者只是普通的JavaScript(我不确定它是否特定于Angular).事实证明,这对谷歌来说是一件困难的事情,被命名为"它"和所有.我已经看到它在整个AngularJS文档中使用过.我将从ngShow页面给你一个例子(它是隐藏/显示包含竖起拇指或拇指向下的div的代码).

var thumbsUp = element(by.css('span.glyphicon-thumbs-up'));
var thumbsDown = element(by.css('span.glyphicon-thumbs-down'));

it('should check ng-show / ng-hide', function() {
  expect(thumbsUp.isDisplayed()).toBeFalsy();
  expect(thumbsDown.isDisplayed()).toBeTruthy();

  element(by.model('checked')).click();

  expect(thumbsUp.isDisplayed()).toBeTruthy();
  expect(thumbsDown.isDisplayed()).toBeFalsy();
});