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使用RequireJS模块化后代码被拆分成多个JS文件了，在部署生产环境需要压缩合并，RequireJS提供了一个打包压缩工具r.js来对模块进行合并压缩。r.js非常强大，不但可以压缩js，css，甚至可以对整个项目进行打包。
r.js的压缩工具使用UglifyJS或Closure Compiler。默认使用UglifyJS（jQuery也是使用它压缩）。此外r.js需要node.js环境，当然它也可以运行在Java环境中如Rhino。JAVA环境使用Ant构建可以参考另外一篇RequireJS optimizer Ant task有介绍。node环境参考RequireJS模块化与GruntJS构建。
本篇介绍require.js官方文档中介绍的方法。
build.xml
{ appDir: ‘../www‘, baseUrl: ‘js/lib‘, paths: { app: ‘../app‘ }, dir: ‘../www-built‘, modules: [ //First set up the common build layer. { //module names are relative to baseUrl name: ‘../common‘, //List common dependencies here. Only need to list //top level dependencies, "include" will find //nested dependencies. include: [‘jquery‘, ‘app/lib‘, ‘app/controller/Base‘, ‘app/model/Base‘ ] }, //Now set up a build layer for each page, but exclude //the common one. "exclude" will exclude nested //the nested, built dependencies from "common". Any //"exclude" that includes built modules should be //listed before the build layer that wants to exclude it. //"include" the appropriate "app/main*" module since by default //it will not get added to the build since it is loaded by a nested //require in the page*.js files. { //module names are relative to baseUrl/paths config name: ‘../page1‘, include: [‘app/main1‘], exclude: [‘../common‘] }, { //module names are relative to baseUrl name: ‘../page2‘, include: [‘app/main2‘], exclude: [‘../common‘] } ]} |
在node环境下执行 node r.js -o build.js 就可以压缩合并模块。
项目参考https://github.com/requirejs/example-multipage/blob/master/tools/build.js
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原文地址：http://www.cnblogs.com/wyaocn/p/5804233.html
