require_once('tcpdf/tcpdf.php'); $pdf = new TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false); $pdf->addPage(); $pdf->IncludeJS("app.alert('Hello World!');"); $pdf->Output('hello_world.pdf', 'I');
require_once('tcpdf/tcpdf.php'); $pdf = new TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false); $pdf->addPage(); $pdf->IncludeJS(' function onClick() { app.alert("Button clicked!"); } '); $pdf->writeHTML(''); $pdf->Output('button_example.pdf', 'I');In this example, we define a JavaScript function that displays an alert when called, and then add a button to the PDF document that executes the function when clicked. The package library used in these examples is TCPDF, which is available for free and can be easily installed using Composer or downloaded from the official website.