Summary of JSTL Standard functions

Jstl Standard Functions

The declaration of a standard function must be introduced in the JSP before using these functions

<%@ taglib prefix= "FN" uri= "Http://java.sun.com/jsp/jstl/functions"%>

The following is a list of the methods that are in JSTL and their descriptions

Name of function	Function description	Examples of Use
Contains	Determine if a string contains another string	<c:if test= "${fn:contains (name, SearchString)}" >
Containsignorecase	Determines whether a string contains another string ( case -insensitive )	<c:if test= "${fn:containsignorecase (name, SearchString)}" >
EndsWith	Determines whether a string ends with a different string	<c:if test= "${fn:endswith (filename,". txt ")}" >
EscapeXML	Turn some characters into XML representations, such as < characters should be converted to <	${fn:escapexml (Param:info)}
IndexOf	The position where the substring appears in the parent string	${fn:indexof (Name, "-")}
Join	Unites the data in the array into a new string and uses the specified character format to open the	${fn:join (Array, ";")}
Length	Gets the length of the string, or the size of the array	${fn:length (Shoppingcart.products)}
Replace	Replace the character specified in the string	${fn:replace (Text, "-", "?")}
Split	Segmentation the string according to the specified word	${fn:split (Customernames, ";")}
StartsWith	Determines whether a string starts with a substring	<c:if test= "${fn:startswith (product.id," 100-")}" >
Substring	Get child string	${fn:substring (Zip, 6,-1)}
Substringafter	Gets the substring starting at the location of a character	${fn:substringafter (Zip, "-")}
Substringbefore	Gets the substring from the beginning to the location of a character	${fn:substringbefore (Zip, "-")}
toLowerCase	Convert to lowercase	${fn.tolowercase (Product.name)}
toUpperCase	Convert to uppercase characters	${fn. Uppercase (Product.name)}
Trim	Remove spaces before and after a string	${fn.trim (name)}

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Summary of JSTL Standard functions