Implementation of running code function in csdn blog_javascript skills

Because there is no running function, I want to implement the code running function in the page. The following code is a good implementation method. Of course, you can also use it anywhere you want to implement the code running function.

Copy code The code is as follows:

Run the code

Look at csdn's blog The code is getting more and more troublesome
If you need to read it normally, you need to do the following
1. Generally, the places that need to be replaced are
If there is a function src href in the code, pay attention to it.