js compression tool_javascript skills

Through this tool, the size of the js file can be reduced to at least half of its original size, which means the compression ratio is above 50%, and it can prevent the js code from being plagiarized. It really kills two birds with one stone
Download address: (requires PHP support)http://www.51files.com/?ZHTFAFWYJ6CLC3P7GEBQ
Online compression address: http://dean.edwards.name/packer/