Prototype JavaScript Framework | Download PrototypeLatest stable version Download Prototype 1.7.3 (September 22, 2015) Prototype development You can browse the source code at our GitHub repository. If you want the full development package (including unit tests), you can use Git to clone the source code: Build the complete “prototype.js” file with the rake dist command. You can find more details about this in the contribution guide. Compatibility T
