javascript - console.log 变量时 target.dispatchEvent 上的 TypeError

Question

我正在尝试在我的 react 组件上运行测试，但是当我在 console.log(nav)

时出现此错误

错误:

Chrome 44.0.2403 (Mac OS X 10.10.4) App has nav FAILED
    Error: the error "TypeError: target.dispatchEvent is not a function" was thrown, throw an Error :)

代码:

import React from 'react/addons';
var TestUtils = React.addons.TestUtils;
import testHelper from '../../test/helpers/testHelper.js';
import App from '../../app/views/app.js';
var app = testHelper.getRouterComponent(App);

describe('App', function() {
    it('has nav', function(done) {
        var nav = TestUtils.findRenderedDOMComponentWithTag(app, 'nav');
        console.log(nav);
        expect(nav).to.exist;
        done();
    });
});

不太确定如何调试或为什么会出现这种情况。当我删除 console.log(nav) 时，错误没有出现。

Answer 1

代替 console.log 尝试:

console.log(require('util').inspect(nav, { depth: null }));