You can run the Script Editor from a web page link.
For example, clicking on this link
Try me!
invokes this URL:
applescript://com.apple.scripteditor?action=new&script=display%20dialog%20%22Try%20me!%22
The Script Editor will pop up containing:
display dialog "Try me!"
Click on "Run" to compile and execute the script.
Here are some other examples:
Open Chess
This will invoke:
applescript://com.apple.scripteditor?action=new&script=tell application %22Chess%22%0D%09activate%0D%09end tell
The Applescript code is:
tell application "Chess"
activate
end tell
Open new Safari window with blank URL
The link is encoded:
<a href="applescript://com.apple.scripteditor?action=new&script=tell application %22Safari%22%0D%09make new document with properties {URL:%22%22}%0D%09 end tell">Open new Safari window with blank URL</a>
The Applescript code is:
tell application "Safari"
make new document with properties {URL:""}
end tell