Using the Javascript Editor

You can use the embedded JavaScript editor to write Marlowe code.

To use the editor follow these steps:

  1. Open the Marlowe Playground.

  2. Click Start coding! and select Javascript from the menu.

    You will see a window like this:

Java Script

  1. You can import values and functions from the provided library written in TypeScript. They can be used to generate Marlowe smart contracts from TypeScript or JavaScript.

  2. Describe a contract in the editor, alternatively, you can upload an example written in JavaScript. The last expression in the file needs to be of type Contract: below we define the top-level constant contract to be of that type.


  1. Click Compile to convert this contract from Javascript into Marlowe.

  2. Then click Send to Simulator in the top right-hand corner.

    You can also find more details about simulation in the Marlowe tutorial.

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