Script Functions

Prince supports arbitrary JavaScript functions to be called from CSS generated content using the prince-script() function.

p::after {
    content: prince-script(myfunc)
}

function myfunc()
{
    return "Some generated context text!";
}

Accessing the current date and time

JavaScript functions have access to the current date and time, which can be added to the document using prince-script() in generated content.

@page {
    @top {
	content: prince-script(datestamp)
    }
}

function datestamp()
{
    return (new Date()).toString();
}

User-defined counter styles

The JavaScript functions used with prince-script() can take arguments that are themselves generated content. This allows functions to operate on counter values and implement new counter styles.

li::marker {
    content: prince-script(mycounterstyle, counter(list-item))
}

function mycounterstyle(n)
{
    if (n == 1) return "one";
    else if (n == 2) return "two";
    else if (n == 3) return "three";
    else return n;
}