Page 91 - DCAP202_Fundamentals of Web Programming

Fundamentals of Web Programming

Notes
Did u know? Its value is a string indicating the data type of the operand.
The typeof operator evaluates to “number”, “string”, or “boolean” if its operand is a number,
string, or boolean value and returns true or false based on the evaluation.
Here is the list of return values for the typeof Operator :

Table 7.5: List of Return Values for the typeof Operator

Type String Returned by typeof
Number "number"
String "string"
Boolean "boolean"
Object "object"
Function "function"
Undefined "undefined"
Null "object"

Task Give examples of different types of operators.

7.1.8 Operator’s Precedence

The precedence of operators determines the order they are applied when evaluating an expression.
You can override operator precedence by using parentheses. The precedence of operators, from
lowest to highest is as follows:
comma ,
assignment = += -= *= /= %= <<= >>= >>>= &= ^= |=
conditional ?:
logical-or ||
logical-and &&
bitwise-or |
bitwise-xor ^
bitwise-and &
equality == !=
relational < <= > >=
bitwise shift << >> >>>
addition/subtraction + -
multiply/divide * / %
negation/increment ! ~ - ++ —
call, member () [] .
Self Assessment

Fill in the blanks:
1. ........................... operators test to see if two variables relate to each other in the specified
way.

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