AJAX - The Complete Reference

570 Part IV: Appendixes

Operator Description Example

<< Bitwise left shift the first operand by the value of the

second operand, zero filling “vacated” bit positions.

var x = 1<<2

//4

>> Bitwise right shift the first operand by the value of the

second operand, sign filling the “vacated” bit positions.

var x = -2>>1

//-1

>>> Bitwise right shift the first operand by the value of the

second operand, zero filling “vacated” bit positions.

var x = -2>>>1

//2147483647

& Bitwise AND var x = 2&3;

//2

| Bitwise OR var x = 2|3;

//3

^ Bitwise XOR (exclusive OR) var x = 2^3;

//1

~ Bitwise negation is a unary operator and takes only one

value. It converts the number to a 32-bit binary number

then inverts 0 bits to 1 and 1 bits to 0 and converts

back.

var x=~1

//-2

TABLE A-13 Binary and Self-Assignment Bitwise Operators

Operator Example

+= var x = 1;

x+= 5;

//6

-= var x = 10;

x -= 5;

//5

*= var x = 2;

x *= 10;

//20

/= var x = 9;

x /= 3;

//3

%= var x = 10;

x %= 3;

//1

<<= var x = 4;

x <<= 2;

//16

>>= var x = 4;

x >>= 2;

//1

TABLE A-14 Binary and Self-Assignment Bitwise Operators