In some cases, you might want to include values that depend on client-side user input (e.g., write a pd_script that executes a query provided as input by the user). To do that, you can use the
"$val(<id>)"
directive, which acts as a macro that will be resolved at the time the kernel request is executed.
"$val(<id>)" takes one argument that can be one of the following:
html element id: The macro is replaced by the value of the HTML element specified by the id. For example:
<pd_script> self.executeQuery("$val(inputId)") </pd_script>
JavaScript function: The macro is replaced by the value returned by the specified JavaScript function. For example:
<script> function resValue(){ return "my_query"; } </script> ... <pd_script> self.executeQuery("$val(resValue)") </pd_script>
Notedynamic values are currently supported in pd_options and pd_script .