Using the expression builder
The expression builder, shown in
Figure 11‑2, is a tool you use to create, modify, and view expressions. It provides a list of the objects, functions, and operators that you can include in expressions. The expression builder is particularly useful when you are learning how to write expressions in JavaScript and discovering which BIRT and JavaScript functions are available.
Figure 11‑2 The expression builder
The expression builder is accessible when you need to specify an expression, such as when you create a computed field in Data Explorer, when you filter data, when you insert a data element, when you specify a data series for a chart, or when you want to display dynamic data in a text element.
You open the expression builder by choosing the button that appears in
Figure 11‑3.
Figure 11‑3 The expression builder access button
