The scripts are all formatted as if they are running in a Before Update Business Rule to demonstrate that it works server side: const You can find it on most podcast streaming platforms or watch the captioned video here:Īnd here are all the scripts that came from the show. If you switch existing apps to the new engine, we do recommend that you test for functionality and ensure that existing scripts are running correctly.Ĭhuck Tomasi and Paul Jensen’s podcast episode of Break Point on ECMAScript 2021 dives into the new features.The new features are available on scoped apps only for now but we’ve been told that Global scope support is on the roadmap.Under “Design and Runtime” change “JavaSCript Mode” to ECMAScript 2021 (ES12).Create a new app via your preferred method (eg.Make sure your instance is upgraded to Tokyo (get a Personal Developer instance here).
To utilize ECMASCript 2021 on your app, just follow these simple steps: This page has all the new features that are supported, not supported, and disallowed. To see the full documentation of changes, you can see the release notes here: JavaScript engine feature support. ServiceNow has denoted our version of JavaScript as ECMAScript 2021, which encompasses the feature roll-up of ECMAScript 6 to ECMAScript 12.
Newer versions have come out since then (7+ years ago!) and thus, we have been missing out on some helpful functionality.Ĭlient-side scripting is run in your web browser so usually any client script you’ve made on ServiceNow could utilize the newest JavaScript features, but any script running on the server was limiteded to ES5. “ECMAScript” is basically the version of JavaScript. Prior to the Tokyo Release, ServiceNow’s serverside JavaScript utilized ECMAScript 5. While var results in a variable with the surrounding function as its scope, the scope of a variable declared using let is only the block it is in.The biggest request from developers is finally here! That’s right, support for newer versions of ECMAScript has arrived with ServiceNow’s Tokyo Release. You’re used to declaring variables using var. Most of the code samples come with an external “Run this code” link, so that you can see the code and play with it. If you need to support old versions of browsers that lack many ES6 features, I’ll touch on solutions that might help you start using ES6 today. Please note that support for these new ECMAScript 6 features is well underway in modern browsers, although support varies. In this article, we’ll discuss a hand-picked selection of ES6 features that you can use in your everyday JavaScript coding. The features have varying degrees of complexity and are useful in both simple scripts and complex applications.
It’s the next version of JavaScript, and it has some great new features. You’ve probably heard about ECMAScript 6 (or ES6) already.
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