javascript prohibits copying web pages_javascript tips

1. Disable right-click and copy
Method 1:
Add the following code to the web page:

Method 2:
Add the following code in
:

or

Essentially, method 2 is the same as method 1. Method 3:
If you only limit copying, you can add the following code in
:

2. Make the menu "file" "-"Save as" invalid
If you just disable right-clicking and selecting copy, others can also copy the file through "File" - "Save as" in the browser menu. In order to invalidate the copy, you can add the following code between and
:
In this way, the user saves the web page When the time comes, the error "Unable to save the web page" will appear.