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This article shows you what are the shortcomings of iframe, the content is concise and easy to understand, it can definitely brighten your eyes. I hope you can gain something through the detailed introduction of this article.

The characteristics of this topic

The characteristic of this question is that it does not follow the normal routine to ask questions, generally asking the advantages, here is more abnormal to ask the shortcomings of iframe, many students must not be used to this kind of question and answer, because usually only pay attention to a little bit, such a question will be confused!

The ideas and main points of the solution to this question

① iframe blocks the Onload event on the main page

The search program of ② search engine can not interpret this kind of page, which is not good for SEO.

③ affects the parallel loading of pages.

Knowledge supplement: what is parallel loading?

Parallel loading: requests under the same domain name at the same time. In general, the iframe and the page are under the same domain, and there is a limit to how many browsers can load. The figure below is as follows

Bonus points for answering questions (propose solutions)

Use js to dynamically load the page content into the src of iframe. The sample code is as follows:

[html] view plain copy

Document.getelementbyid ("fram") .src = "a2.html"

The above is what are the shortcomings of iframe? have you learned any knowledge or skills? If you want to learn more skills or enrich your knowledge reserve, you are welcome to follow the industry information channel.

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