未捕获的DOMException：无法在'CommandLineAPI'上执行'$'：无效的选择器 [英] Uncaught DOMException: Failed to execute '$' on 'CommandLineAPI': not a valid selector

问题描述

我正在使用selenium为我的网页编写自动化UI测试。
我正在测试的网页上有一个元素：

I am writing automation UI tests for my web page using selenium. I have an element on the web page which I am testing:

<&lt input type="checkbox" id="screening_questions[0].multiple_choice[0]-dealbreakerField" value="on" style="position: absolute; cursor: inherit; pointer-events: all; opacity: 0; width: 100%; height: 100%; z-index: 2; left: 0px; box-sizing: border-box; padding: 0px; margin: 0px;>

由于该元素具有id属性，因此我尝试使用其id值来定位它，但是它不起作用。

Since the element has id attribute, so I tried to locate it by using its id value but it didn't work.

如果我在chrome控制台中搜索该元素，则为：

If I search for that element in chrome console as:

$('#screening_questions[0].multiple_choice[0]-dealbreakerField')

我得到了例外：未捕获的DOMException：

I get the exception: Uncaught DOMException:

Failed to execute '$' on 'CommandLineAPI': '#screening_questions[0].multiple_choice[0]-dealbreakerField' is not a valid selector.

我认为找到我会很简单给定其id值。

I thought it will be pretty straight forward to locate it given its id value. Could you please suggest what could be wrong here?

推荐答案

此错误消息...

Failed to execute '$' on 'CommandLineAPI': '#screening_questions[0].multiple_choice[0]-dealbreakerField' is not a valid selector.

...表示您采用的定位器策略 不是有效的选择器。

根据您共享的 HTML ，所需的元素是带有的< input> 标记类型属性作为 复选框 ，并使用 id 属性您必须转义。字符，然后可以使用以下任一选项：

As per the HTML you have shared the desired element is a <input> tag with type attribute as checkbox and to use the id attribute you have to escape the . characters and you can use either of the following options :

• cssSelector ：

"input[id=\"screening_questions[0].multiple_choice[0]-dealbreakerField\"][type='checkbox']"

xpath ：

"//input[@id=\"screening_questions[0].multiple_choice[0]-dealbreakerField\"][@type='checkbox']"

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