document.write Special Exceptions when loading script scripts dynamically

There is a JS in the project, which needs to be introduced dynamically.

The wording is as follows:

<Script>document.write ('<script src= "http://www.z4.com/js/xxxx.js?r=' +math.random ()+ '"></script>');</Script>

Found that there was always an error.

The reason is that the </script> in the string matches the <script> , causing the later ');</script> to become HTML text.

The solution is simple, and the </script> is separated.

<Script>document.write ('<script src= "http://www.z4.com/js/xxxx.js?r=' +math.random ()+ '"></scri' + 'pt>');</Script>

Note that later in the <script></script> string used in the </script>, the split processing is required. Otherwise this bug! will also appear

document.write Special Exceptions when loading script scripts dynamically