How to refresh javascript code

The solution for js Code Execution needs to be refreshed. Most websites now have the "run code" function, which has been implemented by searching for a long time ago. However, when I was working on a project recently, if you find that some of the results need to be refreshed, you can find the solution by yourself. In fact, the solution is very simple. See the following code:

Function runCode (cod1 ){
Cod = document. getElementById (cod1)
Var code = cod. innerText;
Var newwin = window. open ('','','');
Newwin. opener = null;
Newwin.doc ument. write (code );
Newwin. location. reload ();
Newwin.doc ument. close ();
}
Just add this sentence:

Newwin. location. reload ();