Javascript: Jasmine 错误:预期{0:HTMLNode，长度:1}为 '#containers'

Question

我花了很长时间试图解决这个问题。任何人都可以帮我解决这个问题。

我完全按照这个 youtube 教程进行操作: http://www.youtube.com/watch?v=3Huh44nsZTw

当我完成输入时:

describe("Experimentation", function() {
var elem;

beforeEach(function() {
    elem = $('<div id="container"><p>Hello World</p></div>');
});

it("allows us to search with CSS selectors", function() {
    expect(elem).toBe('#containers');    // Problem happened here!!!!!!!
});});

输出结果:

Experimentation allows us to search with CSS selectors
Expected { 0 : HTMLNode, length : 1 } to be '#containers'.
Error: Expected { 0 : HTMLNode, length : 1 } to be '#containers'.
    at stack (http://localhost:8888/__jasmine__/jasmine.js:1293:17)
    at buildExpectationResult (http://localhost:8888/__jasmine__/jasmine.js:1270:14)
    at Spec.Env.expectationResultFactory (http://localhost:8888/__jasmine__/jasmine.js:484:18)
    at Spec.addExpectationResult (http://localhost:8888/__jasmine__/jasmine.js:260:46)
    at Expectation.addExpectationResult (http://localhost:8888/__jasmine__/jasmine.js:442:21)
    at Expectation.toBe (http://localhost:8888/__jasmine__/jasmine.js:1209:12)
    at Object.<anonymous> (http://localhost:8888/__spec__/experimentationSpec.js:9:16)
    at attemptSync (http://localhost:8888/__jasmine__/jasmine.js:1510:12)
    at QueueRunner.run (http://localhost:8888/__jasmine__/jasmine.js:1498:9)
    at QueueRunner.execute (http://localhost:8888/__jasmine__/jasmine.js:1485:10)

Answer 1

elem = $('<div id="container"><p>Hello World</p></div>');

expect(elem).toBe('#containers'); 

您正在将容器与容器进行比较。请注意额外的“s”。