. The default value is scroll. How to calculate the number of days between two dates in javascript? For both browsers, if no value is specified or if this attribute is omitted, the marquee will scroll or loop continuously. 1. The Bootstrap carousel is also standards-compliant, as it is basically a Bootstrap version of a CSS marquee.. About Bootstrap Carousels. HTML Tag Reference. This specifies how long to delay between each jump. These animation codes and image codes will allow you to place animated pictures into your blog, website, forum, eBay auction, etc. brightness_4