There are three types of operators that can be used in programs:
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Calculation Operator
In the table below, the calculation result assumes variable A is 3 (0000 0000 0000 0011), and the variable B is 4 (0000 0000 0000 0100).
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Mathematical Operators
Mathematical operators work on two numbers and return a number.
In these examples, assume A is 3 and B is 4.
Operator | Function | Example | Description |
| Bitwise invert |
| Each bit of |
| Addition |
| Variable |
| Subtraction |
| Variable |
| Multiplication |
| Variable |
| Division |
| Variable |
| Remainder |
| Indicates the remainder from the division of |
| Bitwise AND |
| Bitwise logical AND calculation of |
| Bitwise OR |
| Bitwise logical OR calculation of |
| Bitwise XOR |
| Bitwise logical XOR calculation of |
| Bitwise Shift Left |
| Shifts the bits of |
| Bitwise Shift Right |
| Shifts the bits of |
Logical/Comparative Operator
In the table shown below, the calculation result assumes that variable A is 1 (True) and variable B is 0 (False). In Canvas, the values other than 0 are all processed as True. Only 0 is recognized as False.
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In JavaScript ES5, all numbers are treated as 64-bit floating-point numbers. The BigInt type is not currently supported.
JavaScript ES5 does not have an operator for exponentiation. Instead, use the Math.pow function. For example, Math.pow(2, 3) returns 8 (2 raised to the power of 3).
Logical Operators
Logical Operators take in two Boolean values and output a Boolean value.
Operator | Function | Example | Description |
| Logical AND |
| If value in variables |
| Logical OR |
| If value in variables |
| Logical NOT |
| Returns the logical inverse. If A evaluates to |
Note: If the input expressions are not Boolean, they will be converted into a Boolean value. In JavaScript, there are 6 values that are evaluated as false:
falseundefinednullNan(Not a Number)0
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""(empty string)
All other values are evaluated as true.
Comparison Operators
Comparison operators compare two expressions and return true if the comparison is true, and false otherwise.
Operator | Function | Example | Description |
| Less than |
| If |
>
| Greater than |
| If |
| Less than or equal to |
| If |
| Greater than or equal to |
| If |
| Equal to |
| If |
| Instance of |
| If |
| Is not equal to |
| If |
...
| In |
| If there is an instance of |
Assignment Operators
Operator | Function | Example | Description |
| StoreAssignment |
| Stores the value in variable |
| Addition assignment |
| Stores the value |
...
| |||
| Subtraction assignment |
| Stores the value |
| Increment Operator |
| Adds 1 to the value of |
| Decrement Operator |
| Subtracts 1 from the value of |
The assignment operator = can be used consecutively, as shown below:
A = B = C;
In this case, the value of A and B will be set as to the value of C. In other words, the value at on the rightmost side of the operator will be treated as used to set the result value of the = operationvariables on the left. The example mentioned above will be processed internally in the program as shown below:
B←C
A←B
Bitwise Operators
A bitwise operator acts on the bit representation of a variable.
All Bitwise operators are performed by converting the inputs into 32-bit signed integer. The result will be converted back into a 64-bit floating-point number.
In the table below, the calculation result assumes that variable A is 3 (0000 0000 0000 0011), and that variable B is 4 (0000 0000 0000 0100).
Operator | Function | Example | Description |
| Bitwise invert |
| Each bit of |
| Remainder |
| Indicates the remainder from the division of |
| Bitwise AND |
| Bitwise logical AND calculation of |
| Bitwise OR |
| Bitwise logical OR calculation of |
| Bitwise XOR |
| Bitwise logical XOR calculation of |
| Bitwise Shift Left |
| Shifts the bits of |
| Bitwise Shift Right (Signed) |
| Shifts the bits of |
| Bitwise Shift Right (Zero Filling) |
| Shifts the bits of |