This script is the defacto way to enable use of HTML5 sectioning elements in legacy Internet Explorer.
html5shiv is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.
In terms of market share, Sizzle is clearly lagging behind, losing to html5shiv in all segments.
Sizzle has better usage coverage in more websites categories. Including Computers Electronics & Technology, E-commerce & Shopping, Games, Gambling and 9 other categories.
html5shiv is leading in Science & Education, Arts & Entertainment, Health, Law & Government and 7 other categories.
html5shiv is leading in most countries, including United States, Japan, France, Russia and 156 other countries.
Sizzle is leading in South Korea, China, Germany, Finland and 2 other countries.