Operator

Description

Example

Result

+

Adding one value to another (directly or by variables).

a1= 3.5
a2= 4 + a1 
a2 becomes 7.5



Subtracting one value from another

b1= 3.5
b2= 4  a1  .5 
b2 becomes 0

*

Multiplying one value by another

c1= 2
c2= c1*c1 +1 
c2 becomes 5

/

Dividing one value by another

d1= 90
d2= d1/10 + 1 
d2 becomes 10

%

Remained value from dividing of it by another value

e1= 7
e2= d1 % 4 
e2 becomes 3

++

Add one to a variable

f= 8
f++ 
f becomes 9



Subtract one from a variable

g= 3.7
g 
g becomes 2.7

+= num

Add a number to a variable current value

h= 5
h += 2 
h becomes 7

= num

Subtract a number from a variable current value

i= 5
i = 7 
i becomes 3

*= num

Multiply a variable by a number

j= 5
j *= 2 
j becomes 10

/= num

Divide a variable by a number

k= 5
k /= 2 
k becomes 2.5

%= num

A variable value becomes its remaineder from its division by a number

l= 5
l %= 2 
l becomes 1

Code

Result

Result= 2+3*5+18/6+(74)%2
alert (Result) 
?
