Commonly Used JavaScript Functions

=

set equal to

#myVar=5;

==

is equal to

if (#myVar==3)  #myVar2=8;

>=

is greater than or equal to

if (#myVar>=1) #myVar2=9;

>

is greater than

if (#myVar>4)  #myVar2=4;

<=

is less than or equal to

if (#myVar<=20) #myVar2=0;

<

is less than

if (#myVar<10) #myVar2=5;

!=

is not equal to

if (#myVar != 3) #myVar2=0;

&&

and

if (#myVar>3 && #myVar<9) #myVar2=22;

||

or

if (#myVar==3 || #myVar==9) #myVar2=22;

null

a blank value

if (#myVar==null)  #myVar2=null;

isNull()

is null

if (isNull(#myVar)) #myVar2=9;

!isNull()

is not null

if (!isNull(#myVar) #myVar2=99;

+

plus

#myVar + #myVar2;

-

minus

#myVar - #myVar2;

*

times

#myVar * #myVar2;

/

divided by

#myVar / #myVar2;

//

comment (characters following the // are comments)

#myVar2=3;  // set value of myVar2 equal to 3

/*
*/

block comment (/* starts the block comment and */ ends the block comment)

/*
comments are entered on these lines
code entered here will not be executed
*/

Math.pow(a,b)

a raised to the b power

Math.pow(2,4) outputs 16

roundValue(#varCode, num)

round the value of #varCode to 'num' decimal places

roundValue(3.33333,2) outputs 3.33

Math.round(a)

integer closest to a

Math.round(5.4) outputs 5

Math.round(a*10^x)/10^x

the value of a rounded to x decimal points

[14/3 = 14.66666667]
Math.round(14/3) outputs 5
Math.round(14/3*10)/10 outputs 4.7
Math.round(14/3*100)/100 outputs 4.67

Math.abs(a)

absolute value of a

Math.abs(-5) outputs 5

Math.ceil(a)

Rounds the value of a upward to its nearest integer

Math.ceil(5.2) outputs 6

Math.floor(a)

Rounds the value of a downward to its nearest integer

Math.floor(5.8) outputs 5