发表新帖

发表新帖

Client-Side Dynamic Removal of [removed] Tags in <head>

后端未结

关注

 5  2081

南笙 2021-01-31 10:37

Is it possible to remove script tags in the of an HTML document client-side and prior to execution of those tags?

On the server-side I am able

5条回答

轻奢々 (楼主)

2021-01-31 11:06
Right, had another slightly less mad idea than my first, but it does depend on exactly what control you have on being able to insert tags in the head of the pages:

requirement

Put simply, if you can insert a tag to the end of the head, along with the final script snippet - you should be able to do whatever you want with the markup between the noscript tags before it is written back to the page.

The nice thing about this approach is that script-disabled agents will just ignore and parse the markup, but script-enabled agents will store the content up but not use it... exactly what is needed.

implementation

Whilst this is designed to be used with the head, it could easily be used the same way in the body, although it would have to be a separate implementation. This is because it has to work with a balanced and complete node tree, due to the nature of tags (unless you can manage to wrap the entire markup in noscript?!?).

Upsides/Downsides

It's not full-proof, because scripts can lie outside of the head and body tags - at least before they are parsed - but it seems to work pretty confidently on everything I've tested so far... and it doesn't rely on a smattering of randomly ajax-powered code that'll break at the first sign of a browser update ;)

Plus I also like the idea of script tags within noscript tags...
0 讨论(0)

查看其它5个回答
发布评论:

提交评论
- 加载中...

热议问题