Scripting and Syntax

DGLux5 script (DG Script) is a small scripting language that looks like JavaScript. Use it when a calculation or a piece of logic is easier to write as code than to build from dataflow blocks.

The Script block runs a script and puts the result on its output property.
Table blocks run a short script for every row: Filter (condition), Column Mapping, Edit Rows and Remove Rows. See Scripts in table blocks.
Binding paths use the same @ names as scripts. See Page Model.
To run real browser JavaScript, use the JavaScript block instead.

A first script, in a Script block:

var total = 0;
for (var i = 1; i <= 10; i++) {
  total += i;
}
print("done");
return total;   // the block's output becomes 55

Page	Contents
Language Basics	Syntax, statements, functions, types and operators, and how DG Script differs from JavaScript
Page Model	Reading and setting component values with `@`, creating bindings from script, and reusing scripts
Debugging	`print`, `printConsole`, error messages and profiling
Strings and Regular Expressions	String methods, regular expressions, encoding and hashing
Numbers and Math	Number conversion, `numberFormat` patterns, `Math` functions and constants
Dates and Times	`DateTime`, `dateFormat`, `dateParse`, date strings and format patterns
Lists and Maps	List methods, sorting, maps and `for…in`
JSON and XML	Parsing and creating JSON and XML
Tables	Reading and building DGLux5 tables, and scripts in table blocks
Model Functions	Creating, saving, moving and removing components and blocks from script
HTTP Requests and Browser Utilities	`fetchHttpUrl`, promises, blob URLs and calling browser JavaScript
Examples	Longer worked examples

Scripting and Syntax

Where You Can Use Script

Documentation

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