已知另一节点子元素信息，通过XPath获取对应元素值（Selenium）

Hey there, let's work through this Selenium locator issue together. The problem with your original XPath //input[@name='onlyWebsite']//i is that the // axis targets descendant elements, but you mentioned the "green" and "red" (onlyWebsite) checkboxes are in separate nodes—so they aren't nested or parent/child. We need to use relative axes to jump between sibling or common ancestor nodes instead.

Here are practical solutions based on common DOM structures (I'll cover typical scenarios since you didn't share the full HTML):

Scenario 1: Both checkboxes share a common parent container #

If your HTML looks like this (standard for grouped checkboxes):

<div class="checkbox-group">
  <div class="checkbox-item">
    <input name="onlyWebsite" type="checkbox">
    <label>red</label>
  </div>
  <div class="checkbox-item">
    <input type="checkbox">
    <label>green</label>
  </div>
</div>

You can first locate the "red" checkbox's ancestor group, then target the "green" label's associated input:

//input[@name='onlyWebsite']/ancestor::div[@class='checkbox-group']//label[text()='green']/preceding-sibling::input

Scenario 2: Checkboxes are direct siblings under one parent #

If the elements are laid out like this:

<div class="form-row">
  <input name="onlyWebsite" type="checkbox">
  <label>red</label>
  <input type="checkbox">
  <label>green</label>
</div>

Use the following-sibling axis to jump to the next input paired with the "green" label:

//input[@name='onlyWebsite']/following-sibling::label[text()='green']/preceding-sibling::input

Scenario 3: The "green" checkbox uses an <i> tag for styling #

If your checkboxes use icon elements (like custom Bootstrap checkboxes):

<div class="form-check">
  <input name="onlyWebsite" class="form-check-input" type="checkbox">
  <label class="form-check-label">red</label>
</div>
<div class="form-check">
  <input class="form-check-input" type="checkbox">
  <label class="form-check-label"><i class="fa fa-check"></i> green</label>
</div>

Target the sibling container of the "red" checkbox, then find the icon linked to the "green" label:

//input[@name='onlyWebsite']/parent::div/following-sibling::div//i[parent::label[contains(text(),'green')]]

Quick Debugging Tip #

Always test your XPath in the browser's DevTools first to validate:

1. Open DevTools (F12)
2. Switch to the Console tab
3. Run $x("your-xpath-expression")—this returns a list of matching elements so you can tweak the expression until it hits the right one.

内容的提问来源于stack exchange，提问作者Mlody87