What does the wildcard character '*' in '*.js' mean in the context of the command?

In the context of the command mv *.js scripts/, the wildcard character * represents zero or more characters in file names.

Meaning of *.js:

• *: Matches any sequence of characters, including none. This means it can match any file name.
• .js: Specifies that the file must end with the .js extension.

Result:

The pattern *.js matches all files in the current directory that have a .js extension, such as:

• script1.js
• app.js
• test.js

When used in the mv command, it tells the system to move all of these matched JavaScript files to the specified destination (in this case, the scripts/ directory).