GoogleChrome/dialog-polyfill

Health v2 · maintenance only

Adoption not part of the score

2458 stars · 240 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A JavaScript and CSS polyfill that adds support for the HTML <dialog> element and <form method="dialog"> to browsers lacking native support. It registers dialog nodes so they behave like native dialogs, including modal mode with an inert backdrop.

Use cases

• use the html dialog element in older browsers
• show modal popups with a backdrop
• make the page inert while a dialog is open
• support form method=dialog close buttons
• polyfill dialog in ie9 and legacy browsers
• style dialog backdrops consistently across browsers

When to choose

• you need <dialog> support in browsers without native implementation, including IE9+
• you want a small drop-in polyfill that defers to native support when available
• you need modal dialogs with accessibility support in legacy environments

When to avoid

• you only target modern browsers with native <dialog> support
• your dialogs live inside Shadow DOM or stacking-context parents, where the polyfill has known limitations
• you need a full component library rather than a single-element polyfill

Facets

library · maturity maintenance

ui-components accessibility web-development frontend accessibility browser polyfill html-dialog modal javascript nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="GoogleChrome/dialog-polyfill")