## What are the differences between JavaScript, TypeScript, and eTS?
Applicable to: OpenHarmony SDK 3.2.3.5, stage model of API version 9
- JavaScript: a lightweight, weakly-typed programming language, most commonly known as the scripting language for web pages.
- TypeScript: a superset of JavaScript, with additions of static typing and more object-oriented APIs, enums, etc.
- eTS: a superset of TypeScript and the programming language for OpenHarmony ArkUI development, which powers UI development through a declarative development paradigm.
For details, see [XML-to-JavaScript Conversion](../reference/apis/js-apis-convertxml.md).
## How do I convert the time to the HHMMSS format?
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@@ -93,4 +90,5 @@ export default class DateTimeUtil{