Notes for You:: Bitwise Operators in JavaScript - JavaScript Tutorial 29
- are used to perform operations on bits (i.e. 0s and 1s)
- convert the given decimal number(s) to their binary equivalent number, and then they perform the operations on bits of the converted binary equivalent number(s) and return the result as decimal number.
& (Bitwise AND Operator):
- If both LHS and RHS are 1 then the result will be 1, in all other cases result will be 0.
| (Bitwise OR Operator):
- If both LHS and RHS are 0 then the result will be 0, in all other cases result will be 1.
^ (Bitwise Exclusive OR Operator):
- If both LHS and RHS are same then the result will be 0, otherwise the result will be 1.
~ (Bitwise complement Operator):
- If the given operand is positive integer, then add 1 and change the sign.
- If the given operand is negative integer, then subtract 1 and change the sign.
<< (Bitwise Left Shift Operator):
- Shifts the bits of first number to the left by number of positions indicated by second number.
- firstNumber * pow(2, secondNumber).
>> (Bitwise Right Shift Operator):
- Shifts the bits of first number to the right by number of positions indicates by second number.
- firstNumber / pow(2, secondNumber).
Example Code:
document.write("Bitwise Operators");
document.write(1 & 1); // 1
document.write(0 | 0); // 0
document.write(1 ^ 0); // 1
document.write(2 & 5); // 0
document.write(2 | 5); // 7
document.write(2 ^ 2); // 0
document.write(~5); // -6
document.write(~(-3)); // 2
document.write(1<<4); // 16
document.write(64>>2); // 16
Note:
- replace < with less-than symbol.
- replace > with greater-than symbol.
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