Bug 249637

Summary:	browserbench.org: illegal invocation of HTMLImageElement.prototype.srcset
Product:	WebKit	Reporter:	tophf <tophf>
Component:	WebKit Website	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	ap, jond, rniwa, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Other
Hardware:	Unspecified
OS:	All

Description tophf 2022-12-19 23:58:46 PST

1. open browserbench.org
2. check the console

Expected: no errors
Observed: "Uncaught TypeError: Illegal invocation"

The cause is this problematic code in index.html added five years ago in bug 172049:

    if (!HTMLImageElement.prototype.srcset) {

Suggesting a possible fix:

    if (!('srcset' in HTMLImageElement.prototype)) {

Comment 1 Radar WebKit Bug Importer 2022-12-26 23:59:16 PST

<rdar://problem/103721986>