Css-replace the editor with the PHP background. Changing the Code does not work.

Thinkphp framework. Editor at A: code at A: {code ...} editor in Area B: code in Area B: {code ...} now I want to use the editor method of Area B at Area .. I changed the code at location A to this form at location B. I went to the background and found that this piece was blank. Please kindly advise PHP.

Thinkphp framework.
Editor in area:

Code in area:

Introduction:
{$ Rs. description}

Editor in Area B:

Code in Section B:

Introduction:
{$ Rs. content}

Now I want to use the editor method of Area B at Area ..
I changed the code at location A to this form at location B. I went to the background and found that this piece was blank.
Please kindly advise PHP.

Reply content:

Thinkphp framework.
Editor in area:

Code in area:

Introduction:
{$ Rs. description}

Editor in Area B:

Code in Section B:

Introduction:
{$ Rs. content}

Now I want to use the editor method of Area B at Area ..
I changed the code at location A to this form at location B. I went to the background and found that this piece was blank.
Please kindly advise PHP.

Tp unfamiliar, Is it missing js file reference or method call?
Comparison

Js and css need to be introduced and initialized
Refer to demo