How to write JavaScript that launches immediately when user opens PDF file

[Armin5E0C]

We want to introduce new features with JS to our customers in our bills, offers, etc made in .pdf to leave feedback and use other interactive features.

I m new with both JS and Acrobat Pro too.

For testing purpose for myself and for now I want to acieve to get an alert (message box) immediately after opening my .pdf file.

Any advice how to do it in JavaScript Editor is welcome.

[Bernd Alheit]

You can use the document open event for this.

[Armin5E0C]

Thanks for quick answer.

I tried:

function test()
{
    document.addEventListener ('open',() => {
    alert('Hello');
});
}

in Javascript Editor but didnt work. Doesnt work with load event too.

[Bernd Alheit]

You can't use web browser javascript in Acrobat.

[Armin5E0C]

Can you please correct below code for Acrobat for the purpose I wrote in my post?

//-------------------------------------------------------------
//-----------------Do not edit the XML tags--------------------
//-------------------------------------------------------------

//<Document-Level>
//<ACRO_source>test</ACRO_source>
//<ACRO_script>
/*********** belongs to: Document-Level:test ***********/
function test()
{
    document.addEventListener ('open',() => {
    alert ('Hello');
});
}
//</ACRO_script>
//</Document-Level>

[JR Boulay · Accepted solution]

Try this:

app.alert("Hello!");

"init" is a sample, you can use every name you like (using the web syntax).

[Armin5E0C]

Thanks bro!

that does the job.

function test()
{
    app.alert("Hello");
}
test();

After the function definition you ve to call it, so it works, but I got the answer.

Thanks again

[Armin5E0C]

Sorry, comments cannot be edited in this community...

You are right, if you dont define function, of course you dont have to call it. Sorry for confusion