# 8.SDK Web (JavaScript SDK) In order to display content in the shop, the **8.SDK Web** (JavaScript SDK) must be integrated. The variable `apiId` must be filled with the API ID provided by us. ```javascript ``` {% hint style="warning" %} The script should be placed as far up as possible in the DOM, preferably as first in the `` tag to ensure it is executed as early as possible. Since the script is inserted dynamically, it is `async` by default and the loading of the page is not blocked. More about this [here](https://developer.mozilla.org/en-US/docs/Web/API/HTMLScriptElement#dynamically_importing_scripts). It is necessary to execute the script before you do the checkout tracking, otherwise tracking will not work. {% endhint %} {% hint style="info" %} The script is required on all pages where 8SELECT widgets are used.\ For transaction tracking, it must also be included on the page **after checkout** where the tracking can happen. {% endhint %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.8select.io/integration/javascript-sdk.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.