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fdf_set_javascript_action — Sets the JavaScript action for a field.


bool fdf_set_javascript_action(fdfdoc, fieldname, whichtrigger, script);
resource fdfdoc: FDF document identifier
string fieldname: Field name
int whichtrigger: Trigger type
string script: Javascript


TRUE on success; FALSE on error


Sets a JavaScript action for the given field fieldname .

whichtrigger can be one of:

FDFEnter Moving the mouse into the field
FDFExit Moving the mouse out of the field
FDFDown Pressng the mouse button down
FDFUp Releasing the mouse button
FDFFormat Change the way the data appears
FDFValidate Verify the entered value was correct
FDFKeystroke Pressing a key or entering some data
FDFCalculate Triggers a calculation script attached to the field


Existing since versions 4.0.2


Example 287. Assign JavaScript action

// create the FDF
$outfdf = fdf_create();

// set a field value
fdf_set_value($outfdf, "volume", $volume, 0);

// set the field action
// if a check box is unchecked, a radio button has one value
// if checked it is updated to a new value
fdf_set_javascript_action($fdf, "checkbox", FDFUp,
"var valMe =;\r"
"var fRadio = this.getField(\"radio\");\r\r"
"if (valMe == \"Off\")\r"
"\tfRadio.value = \"left\"\r"
"\tfRadio.value = \"right\";\r");

// save file and output result to client
fdf_set_file($outfdf, "http://testserver/testfdf/results.pdf");
fdf_save($outfdf, "outtest.fdf");
Header("Content-type: application/vnd.fdf");
$fp = fopen("outtest.fdf", "r");

PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at The authors of this book have elected not to choose any options under the OPL. This online book was obtained from and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

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