Subj : Replacing a text string to execute JS code directly
To   : Nightfox
From : Digital Man
Date : Wed Jan 29 2025 14:43:52

  Re: Replacing a text string to execute JS code directly
  By: Digital Man to Nightfox on Wed Jan 29 2025 01:15 pm

 >   Re: Replacing a text string to execute JS code directly
 >   By: Nightfox to Digital Man on Wed Jan 29 2025 12:39 pm
 >
 >  > Hi DM,
 >
 >  > In the strings from text.dat, I know you can use @exec:..@ to have it run
 >  > a JS or Baja module, but is there a way to have it directly execute a
 >  > block of JS code instead of executing a file?  In my most recent update
 >  > to DDMsgReader, it replaces the AreYouThere string with an empty string
 >  > so that the contents of the screen aren't affected, but I was also
 >  > thinking of having it execute some JS code so that I'd have some more
 >  > control on where the string is displayed, etc.  I could have it execute a
 >  > separate .js with @EXEC@, but I'm not sure I'd want to add a separate .js
 >  > just for that. I'm wondering if there's a way to have it directly execute
 >  > a block of JS code when used with bbs.replace_text()?
 >
 > Not exactly as @-codes are pretty restrictive as to the contents (e.g. no
 > space characters), so it'be pretty hard to put a code block within an
 > @-code. One possibility is to define a JS property with a getter function
 > and then you can invoke that getter function with the JS:propname @-code:
 > https://wiki.synchro.net/custom:atcodes#external_content

Here's an example:

Object.defineProperty(js.global, "prop", {
    get : function () {
        return "hello, world";
    }
});

bbs.replace_text("Pause", "@JS:" + "prop@"); // @-code split for posting
console.pause(); // will invoke the global 'prop' getter function

In this example, the "prop" getter function could do more stuff and just return an empty string if that's what's desired.
-- 
                                            digital man (rob)

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