Basic javascript tutorial Arithmetic Operators
| Operator |
Operator description |
Example |
Example |
| + |
Addition |
X + y |
If x is an integer of 2, y is an integer of 5, x + y is equal to 7 If x is the string "text1" and y is the string "fun ", X + y equals to "text1fun" |
| - |
Subtraction |
X-y |
|
| * |
Multiplication |
X * y |
|
| / |
Division |
X/y |
|
| % |
Division of the two |
X % y |
If x is equal to 10, y is equal to 3, and x % y is equal to 1 |
| ++ |
Increment |
X ++ |
If x equals 10, x ++ equals 11 |
| -- |
Decrease |
Y -- |
If y equals 10, y -- equals 9 |
Basic javascript tutorial logical operators
| Operator |
Operator description |
Example |
Example |
| = |
Equal |
X = y |
If x equals 2 and y equals 2, x = y |
| === |
All equals (values are equal, and data types are equal) |
X = y |
If x is equal to integer 2 and y is the string "2 ", Then x = y is not true. |
| > |
Greater |
X> y |
|
| > = |
Greater than or equal |
X> = y |
|
| < |
Less |
X <y |
|
| <= |
Less than or equal |
X <= y |
|
| ! = |
Not equal |
X! = Y |
|
| ! = |
Not equal |
X! = Y |
|
| && |
And) |
X <10 & y> 1 |
|
| ! |
Not) |
! (X = y) |
|
| | |
Or (or) |
X = 8 | y = 8 |
|
Basic javascript tutorial assignment operator
| Operator |
Operator description |
Example |
Example |
| = |
Assignment |
X = 5 |
Assign the value of integer 5 to variable x |
Note:: Pay attention to the difference between value assignment (=) and equal to (=.