以静态方式加载广告脚本
使用集合让一切井井有条
根据您的偏好保存内容并对其进行分类。
概览
此项评估旨在检查广告脚本是否注入到网页中。
网页上的其他资源可能会延迟提取和加载注入的
脚本，进而导致广告加载延迟。在某些情况下
可能根本无法提取脚本，
。
建议
通过异步脚本代码加载脚本，以提高速度。浏览器预加载扫描器
可以提前提取脚本标记，即使阻塞渲染的资源
脚本执行。
| 不正确 |
<script>
var el = document.createElement('script');
el.src = 'https://securepubads.g.doubleclick.net/tag/js/gpt.js';
var node = document.getElementsByTagName('script')[0];
node.parentNode.insertBefore(el, node);
</script>
|
| 正确 |
<script async src="https://securepubads.g.doubleclick.net/tag/js/gpt.js"></script>
|
确定所注入广告脚本的来源
有时，广告脚本是如何被注入到网页的，
甚至完全被注入。例如，在检查来源
已注入的脚本代码
无法与静态加载的代码区分开来。
在这些情况下，请使用 Chrome 开发者工具中的“Network”标签页来确定来源
所注入的广告脚本
- 按
Control+Shift+J 或 Command+Option+J (Mac) 打开开发者工具。
- 前往 Network（网络）标签页。
- 点击过滤（如果尚未显示的话）
打开过滤器栏并输入
此审核标记的脚本名称输入到文本框中。
- 如果尚未显示，请右键点击任意表格标题，然后选择
Initiator：用于在网络请求中添加“Initiator”列
瀑布图
- 请重新加载页面以捕获网络流量。
如以上屏幕截图所示，“Initiator”（发起者）列将包含相关信息
相关脚本的来源。您可以点击来源链接
直接跳转到负责发出广告脚本请求的代码，或者
将鼠标悬停在来源链接上，可查看导致相应请求的所有调用。
此项审核所参照的许可名单包含已知安全的广告脚本
进行静态加载当前列表为：
| 库 |
脚本 |
| AdSense |
pagead2.googlesyndication.com/pagead/js/adsbygoogle.js
|
| Amazon 发布商服务 |
amazon-adsystem.com/aax2/apstag.js
|
| Criteo 直接出价方 |
static.criteo.net/js/*/publishertag.js
|
| Google 发布商代码 |
googletagservices.com/tag/js/gpt.js
securepubads.g.doubleclick.net/tag/js/gpt.js
|
| Index Exchange |
js-sec.indexww.com/ht/p/*.js
|
干预 document.write()
通过脚本注入的“异步脚本”被视为有害的内容
加速异步代码段
如未另行说明，那么本页面中的内容已根据知识共享署名 4.0 许可获得了许可，并且代码示例已根据 Apache 2.0 许可获得了许可。有关详情，请参阅 Google 开发者网站政策。Java 是 Oracle 和/或其关联公司的注册商标。
最后更新时间 (UTC)：2024-08-22。
[null,null,["最后更新时间 (UTC)：2024-08-22。"],[[["\u003cp\u003eThis audit identifies ad scripts injected into the page that may delay or prevent ad loading.\u003c/p\u003e\n"],["\u003cp\u003eUse async script tags to improve loading speed, enabling the browser to fetch scripts earlier.\u003c/p\u003e\n"],["\u003cp\u003eIf the source of an injected ad script is unclear, Chrome DevTools' Network tab can be used to identify it.\u003c/p\u003e\n"],["\u003cp\u003eA list of safe-to-load ad scripts is provided, including those from AdSense, Amazon, Criteo, Google Publisher Tag, and Index Exchange.\u003c/p\u003e\n"]]],["Ad scripts injected into a page can delay or prevent ad loading. To improve speed, load scripts using `async` script tags, allowing the browser to fetch them earlier. To identify injected scripts, use Chrome DevTools' Network tab: filter by the script name and enable the \"Initiator\" column to find the source. The document provides examples of correct and incorrect code for loading scripts and includes a list of ad scripts from AdSense, Amazon, Criteo, Google Publisher Tag, and Index Exchange.\n"],null,["# Load ad scripts statically\n\nOverview\n--------\n\nThis audits checks whether or not ad scripts are being injected into the page.\nOther resources on the page may delay the fetching and loading of injected\nscripts, which will in turn delay the loading of ads. In some situations these\nscripts may not be fetched at all, preventing ads from being loaded all\ntogether.\n\nRecommendations\n---------------\n\nLoad scripts via async script tags to improve speed. The browser preload scanner\ncan fetch script tags earlier, even if render blocking resources are blocking\nthe script execution.\n\n|---------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| **Incorrect** | ```html \u003cscript\u003e var el = document.createElement('script'); el.src = 'https://securepubads.g.doubleclick.net/tag/js/gpt.js'; var node = document.getElementsByTagName('script')[0]; node.parentNode.insertBefore(el, node); \u003c/script\u003e ``` |\n| **Correct** | ```html \u003cscript async src=\"https://securepubads.g.doubleclick.net/tag/js/gpt.js\"\u003e\u003c/script\u003e ``` |\n\n### Identify the source of injected ad scripts\n\nSometimes it may not be obvious how an ad script is being injected into a page,\nor even that it's being injected at all. For example, when examining the source\nof a page after it's loaded, a script tag that has been injected may appear\nindistinguishable from a tag that was loaded statically.\n\nIn these cases, use the Network tab in Chrome DevTools to determine the source\nof injected ad scripts.\n\n1. Open DevTools by pressing `Control+Shift+J` or `Command+Option+J` (Mac).\n2. Navigate to the **Network** tab.\n3. If not already visible, click **Filter** to open the filter bar and type the name of the script flagged by this audit into the text box.\n4. If not already visible, right-click on any table header and select **Initiator** to include the Initiator column in the network request waterfall table.\n5. Reload the page to capture network traffic.\n\nAs seen in the above screenshot, the initiator column will contain information\nabout the source of the script in question. You can click on the source link to\njump directly to the code responsible for issuing the ad script request, or\nhover over the source link to see all of the calls leading up to the request.\n\nMore information\n----------------\n\nThis audit operates against a allowlist of ad scripts which are known to be safe\nto load statically. The current list is:\n\n| Library | Script(s) |\n|---------------------------|--------------------------------------------------------------------------------------|\n| AdSense | `pagead2.googlesyndication.com/pagead/js/adsbygoogle.js` |\n| Amazon Publisher Services | `amazon-adsystem.com/aax2/apstag.js` |\n| Criteo Direct Bidder | `static.criteo.net/js/*/publishertag.js` |\n| Google Publisher Tag | `googletagservices.com/tag/js/gpt.js` `securepubads.g.doubleclick.net/tag/js/gpt.js` |\n| Index Exchange | `js-sec.indexww.com/ht/p/*.js` |\n\n[Intervening against document.write()](https://developers.google.com/web/updates/2016/08/removing-document-write) \n\n[Script-injected \"async scripts\" considered harmful](https://www.igvita.com/2014/05/20/script-injected-async-scripts-considered-harmful/) \n\n[Speeding Up Async Snippets](https://csswizardry.com/2022/10/speeding-up-async-snippets/) \n[View audit source](https://github.com/googleads/publisher-ads-lighthouse-plugin/tree/HEAD/lighthouse-plugin-publisher-ads/audits/script-injected-tags.js) [Improve this article](https://github.com/googleads/publisher-ads-lighthouse-plugin/tree/HEAD/docs/audits/script-injected-tags.md) [Report an issue](https://github.com/googleads/publisher-ads-lighthouse-plugin/issues/new?labels=documentation&template=documentation-feedback.md&title=Documentation+feedback%3A+script-injected-tags.md)\n\n\u003cbr /\u003e"]]
