Welcome to the Blockly Codelabs

Blockly Codelabs provide a guided, tutorial, hands-on coding experience of Blockly.

beginner

Getting started with Blockly

Start

beginner

Customizing a Blockly toolbox

Start

beginner

Customizing your themes

Start

Intermediate

Customizing context menus

Start

Intermediate

Block validation and warnings

Start

Intermediate

Use CSS in Blockly

Start

Advanced

Build a custom generator

Start

Advanced

Build custom renderers

Start