> For the complete documentation index, see [llms.txt](https://help.listly.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.listly.io/docs/zh-hans/getting-started/extension-features/parts-selection.md).

# 部分提取区域选择

{% hint style="success" %}
[**什么是部分提取（Extract Part）？**](https://help.listly.io/docs/zh-hans/~/revisions/VcdXmHM6Vomt5iX6CwbH/getting-started/extension-features/parts)

这是可以**只选择想要的区域、部分提取数据**的功能。当您想提升提取数据的结构与准确度时，欢迎试试看。
{% endhint %}

## 使用方法

{% stepper %}
{% step %}

### 逐一选择想要的区域

使用部分提取（Extract Part），您可以选择多个数据区域并一次全部提取。

如下方示例所示，点击您需要的各个部分——商品名称、评论、价格、型号等——每个选择的区域都会分别登录到面板中。点击 **\[提取]** 按钮后，所有选择的区域就会同时提取。

<figure><img src="https://5118966-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLlkvcuviCyyU871Augk5%2Fuploads%2Fx9zLKb2qaNiTiRVGVWS6%2Fimage.png?alt=media&amp;token=557efa95-2eb2-4179-b24f-52265c05aa1d" alt=""><figcaption></figcaption></figure>

以这种方式选择并提取时，可以看到每个个别选择区域的信息会如下图所示被提取出来。

<figure><img src="https://5118966-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLlkvcuviCyyU871Augk5%2Fuploads%2FAImboICQeq4422K7rcAu%2Fimage.png?alt=media&amp;token=d78a1987-a0df-45c1-81b5-027c248b0a5c" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### 一次选择重复区域（自动选择重复元素）

**只要点击一次，就能自动选择重复的区域。**

如下方示例所示，点击网页上的特定元素，接着点击与第一个元素重复的元素，Listly 便会识别相似的区域并出现弹出窗口。此时，请点击 **合并为一个（Group All）** 按钮。

<figure><img src="https://5118966-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLlkvcuviCyyU871Augk5%2Fuploads%2F1fbbPtkSShigAqOqReeT%2F6.%E1%84%87%E1%85%AE%E1%84%87%E1%85%AE%E1%86%AB%E1%84%8E%E1%85%AE%E1%84%8E%E1%85%AE%E1%86%AF%E1%84%8B%E1%85%A7%E1%86%BC%E1%84%8B%E1%85%A7%E1%86%A8-gif.gif?alt=media&amp;token=2364898f-8ef4-40ba-9eb2-6679575ed045" alt=""><figcaption></figcaption></figure>

**具有相同层级结构的元素会被识别为单一区域，并记录在侧边面板中，如下所示。** <mark style="color:$info;">（图片中以不同颜色呈现，以便理解。）</mark>

<figure><img src="https://5118966-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLlkvcuviCyyU871Augk5%2Fuploads%2FEoKluTQ2mg2ZHFOSmn9F%2Fimage.png?alt=media&amp;token=c29b7995-57d8-4b15-8ecf-3eeebf8dc957" alt=""><figcaption></figcaption></figure>

以"一次选择重复区域"的方式选择想要的区域后，点击提取按钮即可如下所示提取数据。您也可以轻松汇总同一页面内重复出现的图片与品牌名称。

<figure><img src="https://5118966-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLlkvcuviCyyU871Augk5%2Fuploads%2FWbSB2gT4DsrZ9CAH0i1n%2Fimage.png?alt=media&amp;token=2a442413-2476-403f-8bbd-5f6532f5fbc9" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### 自动选择重复元素（以项目框为单位选择）

您也可以用项目框为单位自动选择重复元素。选择第一个框，再选择连续的第二个框时，即可一次选择所有具有相同结构的项目。

<figure><img src="https://5118966-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLlkvcuviCyyU871Augk5%2Fuploads%2FIGGmW1A86K11UgN1D52S%2Fimage.png?alt=media&amp;token=17f52686-02b1-4feb-abb9-dd585500116e" alt=""><figcaption></figcaption></figure>

**若您想以项目为单位这样选择，**&#x5F53;检测到您所选两个区域之间有相似模式而出现弹出窗口时，\
请确认 **"以项目为单位选择（Select by item）"** 已启用，再点击 **"合并为一个（Group All）"**。

<figure><img src="https://5118966-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLlkvcuviCyyU871Augk5%2Fuploads%2FE8F9kpJRsA88FFaSLY3D%2F6.%E1%84%87%E1%85%AE%E1%84%87%E1%85%AE%E1%86%AB%E1%84%8E%E1%85%AE%E1%84%8E%E1%85%AE%E1%86%AF%E1%84%8B%E1%85%A7%E1%86%BC%E1%84%8B%E1%85%A7%E1%86%A8-%E1%84%8B%E1%85%A1%E1%84%8B%E1%85%B5%E1%84%90%E1%85%A6%E1%86%B7%E1%84%83%E1%85%A1%E1%86%AB%E1%84%8B%E1%85%B1%20%E1%84%89%E1%85%A5%E1%86%AB%E1%84%90%E1%85%A2%E1%86%A8.gif?alt=media&amp;token=1a026ff1-5186-466c-af89-f41a2fda85c5" alt=""><figcaption></figcaption></figure>

如上图所示，启用此切换开关后，可以看到选择区域的虚线框会扩展至项目层级。
{% endstep %}
{% endstepper %}


---

# Agent Instructions
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