In 1995, a Netscape employee wrote a hack in 10 days that now runs the Internet

JavaScript, which runs on an estimated 98.9 percent of all websites globally, is celebrating the 30th anniversary of its initial announcement. The programming language originated from a joint press release issued by Netscape Communications and Sun Microsystems in May 1995, following an intensive 10-day sprint by Netscape engineer Brendan Eich who developed the foundational working prototype. Netscape intended the design to be a lightweight scripting tool that would appeal to web designers and non-professional programmers, allowing them to add interactive elements to webpages. JavaScript quickly grew past its browser origins and now consistently ranks among the most widely used languages in the world, powering mobile applications, server infrastructure, desktop software, and embedded systems.