Provides a unified way to detect new features that use script elements.

Motivation

Currently there is no simple way to know what kind of types can be used for HTMLScriptElement’s type attribute. There are several new feature proposals using the script element. https://github.com/WICG/import-maps/ https://github.com/jeremyroman/alternate-loading-modes/blob/main/triggers.md#speculation-rules https://github.com/WICG/resource-bundles/ We can use the nomodule attribute to detect the module type support. But there is no unified method to detect such new features. If we have the HTMLScriptElement.supports(type) method which is like HTMLLinkElement.relList.supports(), we can easily detect such features.

Demo

• https://horo-t.github.io/explainers/script_element_supports_sample.html

Documentation

• https://github.com/horo-t/explainers/blob/main/script_element_supports.md

Specification

Specification link

Status: Final published standard: Recommendation, Living Standard, Candidate Recommendation, or similar final form

Status in Chromium

Blink components: Blink>HTML>Script

Implementation status: Enabled by default (tracking bug)

Consensus & Standardization

• Firefox: Shipped/Shipping
• Safari: No signal
• Web Developers: Positive

Owner

• horo@chromium.org

Intent to Prototype url

Last updated on 2022-01-17