| Objects | Descriptions |
|---|
| pageScope( ) | Sets the given attribute name with the value set in the page scope. |
| requestScope( ) | Used to access the value of the variable which is set in the request scope. |
| pageContext( ) | Sets the context of the page. |
| sessionScope( ) | Accesses the value of variable in session scope. |
| applicationScope( ) | Accesses the value of the variable which is sent in application scope. |
| param | Maps the single parameter to the single value.vv |
| paramValues | Maps the request parameters as a collection of String. |
| header | Contains the HTTP request header as a String value. |
| headerValues | Contains the HTTP request header as a collection of String value. |
| cookie | Maps the given cookie name to the cookie value. |
Example: EL using implicit object
//index.jsp
<form method="post" action="welcome.jsp">
Name: <input type="text" name="user" >
Password: <input type ="text" name="pass" >
<input type="submit" value="submit">
</form>
//welcome.jsp
<html>
<head>
<title>Welcome Page</title>
</head>
<body>
<h1>Welcome ${param.name}</h1>
<p> Your password is ${param.pass} </p>
</body>
</html>
| Operators | Description |
|---|
| . | Access bean property |
| [ ] | Array or list of element. |
| ( ) | Set the evaluation order by group the expression |
| + | Addition |
| - | Subtraction |
| * | Multiplication |
| / or div | Division |
| % or mod | Modulo |
| = = or eq | Equality (equal) |
| ! = or ne | Inequality (not equal) |
| < or lt | Less than |
| > or gt | Greater than |
| < = or le | Less than or equal |
| > = or ge | Greater than or equal |
| && or and | Logical AND |
| | | or or | Logical OR |
| ! or not | Unary operator |
| empty | Empty variable values |
