The default method:

String formatNumber(Object number, String pattern);

i.e.,

org.zkoss.xel.fn.CommonFns

Formats a number (Integer, BigDecimal…) into a string with the given pattern.

For example,

<?taglib uri="http://www.zkoss.org/dsp/web/core" prefix="c"?>
<zk>
    <label value="${c:formatNumber(2332315231, '$ ###,###,###.00')}" />
</zk>

There is another extended built-in function, not declared in taglib:

org.zkoss.xel.fn.CommonFns

.

You can call it by EL or declaring a xel-method.

Parameters: In both default and extended functions:

  • number - the Number to format
  • pattern - the pattern to apply

In extended function only:

  • locale - the locale to apply