JSTL Library of functions

js| function

Working with instances: <%@ taglib prefix= "FN" uri= "Http://java.sun.com/jsp/jstl/functions"%> ${fn:length (mycollection)}
Other functions:

function	Description
Fn:contains (string, substring)	Returns true if parameter substring is included in the parameter string
Fn:containsignorecase (string, substring)	Returns true if the parameter string contains the parameter substring (ignore case)
Fn:endswith (string, suffix)	Returns true if the argument string ends with the argument suffix
Fn:escapexml (String)	Converts XML (and HTML) with special meaning to the corresponding XML character entity code, and returns
Fn:indexof (string, substring)	Returns the position of the first occurrence of the parameter substring in the parameter string
Fn:join (array, separator)	Strings a given array of arrays with a given spacer separator, forming a new string and returning.
Fn:length (item)	Returns the number of elements contained in the parameter item. The parameter item type is an array, collection, or string. If it is a string type, the return value is the number of characters in string.
Fn:replace (String, before, after)	Returns a String object. Replaces all occurrences of the parameter before string in the parameter string with the argument after string and returns the result of the substitution
Fn:split (string, separator)	Returns an array with the parameter separator as the separator string, and each part of the partition is an element of the array
Fn:startswith (string, prefix)	Returns true if the argument string begins with the argument prefix
Fn:substring (string, begin, end)	Returns the string part of the argument string, starting at the parameter end, including the character
Fn:substringafter (string, substring)	Returns the portion of the string that follows the parameter substring in the parameter string
Fn:substringbefore (string, substring)	Returns the part of the string that precedes the argument substring in the parameter string
Fn:tolowercase (String)	Changes all characters in the parameter string to lowercase and returns them to the
Fn:touppercase (String)	Capitalizes all characters in the parameter string and returns them to the
Fn:trim (String)	Remove the trailing space of the parameter string and return it