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Chapter 6
Scripting with JavaScript
Overview
Elixir Report Designer supports JavaScript 1.5 as standardized by the European Computer Manufacturer's Association(ECMA) as ECMA Script version 3. This document details some of the features of
JavaScript and their use within the Report framework.
In Elixir Report Designer, scripts are always rendered in the order that the bands appear in the output.
Within a band, scripts in RenderIf will be rendered first. It will be followed by OnRenderBegin,
OnRenderEnd, then OnLayout. As for the element(s) in each band, scripts of each element will
run in the order the elements appear in the Shapes tree (Z-order).
JavaScript is a weakly typed, object-based scripting language modeled on Java syntax. It is a casesensitive language and the following key-words are reserved. It is a case sensitive language and the
following keywords are reserved.
Table 6.1. JavaScript Keywords
break
else
instanceof true
case
false
new
try
catch
finally
null
typeof
return
var
continue for
default
function switch
void
delete
if
this
while
do
in
throw
with
Three primitive types are available: Numbers, Booleans and Strings, along with two compound types:
Objects and Arrays.
Number
Numbers in JavaScript are represented internally using 64-bit floating point values - there is no integer
type. Numbers may be written in decimal form: 10, 20.5, 30, exponent form: 3e-2 or hexadecimal:
0xFF.
JavaScript supports all conventional mathematical operators, including +,-,*,/ and % (modulus). The
Math object provides additional functionality, such as sqrt, power, sin, cos, tan etc. Certain operations
may yield errors with invalid input, for example Math.sqrt(-1) produces the result NaN - a special
value which indicates the result is Not A Number.
Boolean
The Boolean type has two values: true and false. Boolean can be used as a function: Boolean(x) where
the result is true unless x is 0, NaN, null, undefined or "" (the empty string).
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