| Implicit Variables |
| ${ requestScope} | Maps request-scoped variable names to their values | ${pageContext} | The context for the JSP page. |
| ${ param} | Maps a request parameter name to a single value | ${session} | The session object for the client. |
| ${ paramValues} | Maps a request parameter name to an array of values. | ${header} | Maps a request header name to a single value. |
| ${ request} | The request triggering the execution of the JSP page. | ${response} | The response returned by the JSP page. |
| ${ headerValues} | Maps a request header name to an array of values | ${cookie} | Maps a cookie name to a single cookie |
| ${ initParam} | Maps a context initialization parameter name to a single value. | ${pageScope} | Maps page-scoped variable names to their values |
| ${ applicationScope} | Maps application-scoped variable names to their values | ${ servletContext} | The context for the JSP page's servlet. |
| ${ sessionScope} | Maps session-scoped variable names to their values | |
| Operators |
| (a && b) ; a and b | And (first needs escape on & as &) | a + b | Addition |
| (a < b) ; a lt b | Less than (first needs escape on < as <) | a - b | Subtraction |
| (a >b) ; a gt b | Greater than (first needs escape on >as >) | a * b | Multiplication |
| (a <= b) ; a le b | Less than or Equals (first needs escape on < as <) | a / b ; a div b | Division |
| (a >= b) ; a ge b | Greater than or Equals (first needs escape on >as >) | a % b ; a mod b | Modulo |
| empty a | is empty or null | - a | Negative |
| a || b ; a or b | Or | ! a ; not a | Not |
| a == b ; a eq b | Equals | a != b ; a ne b | Not Equals |
| a ? b : c | Evaluate B or C, depending on the result of the evaluation of A | a instanceof b | a instaceof b |
| JSP Functions |
| ${fn: trim(text)} | string = trim(text) ; remove whitespace at front and end | ${ fn:indexOf (text, search)} | int = text indexOf search |
| ${fn: containsIgnoreCase ( text, search)} | true/false = text constains search ignoring case | ${ fn:substring (text, 6, -1)} | string = substring of text |
| ${fn: replace ( text, search, replace)} | string = replace search in text with replace | ${ fn:UpperCase (text)} | string = upper case of text |
| ${fn: split ( text, seperator)} | array = split text into array on seperator | ${ fn:toLowerCase (text)} | string = lower case of text |
| ${fn: join ( array, seperator)} | string = linkes collection with seperator | ${fn:contains (text, search)} | true/false = text constains search |
| ${fn: length ( txtOrCol)} | int = length of string or collection size | ${fn:endsWith (text, postifx)} | true/false = text endsWith postfix |
| ${fn: substringAfter ( text, search)} | string = the textstring after search | ${fn:escapeXml (text)} | string = escpae xml characters in text |
| ${fn: substringBefore ( text, search)} | string = the textstring before search | ${fn:startsWith (text, prefix)} | true/false = text starts with prefix |