reactjs - React 测试库中的类型 'value' 不存在属性 'HTMLElement'

Question

I am using React-testing-library and getting an error on the last line which is: expect (title.value).toBe("testtitle");})}) . The error message is Property 'value' does not exist on type 'HTMLElement'. How can I rectify this error message in order to write this code efficiently?

测试文件

  <Router history={history}>
            <Route render={(props) => 
            <NewQuestion {...props} onSave={jest.fn()}/>}/>
        </Router>)
    const title= getByPlaceholderText("What's your question? Be specific");
    fireEvent.change(title, {target: {value: "testtitle"}})
    expect (title.value).toBe("testtitle");})})

Answer 1

您应该将 title 变量转换为 HTMLInputElement 才能真正拥有 value 属性。尝试以下代码:

const title = getByPlaceholderText("test") as HTMLInputElement;