使用node的插件UglifyJs来合并和压缩文件

code:

 var fs = require('fs');
 var jsp = require("./UglifyJS-master/uglify-js").parser;
 var pro = require("./UglifyJS-master/uglify-js").uglify;
 var finalCode='';
 function jsMinifier(flieIn) {
     var flieIn=Array.isArray(flieIn)? flieIn : [flieIn];
     var origCode,ast;

     var getAllFiles = function (dir) {
         var filesArr = fs.readdirSync(dir);
         for(var j = 0; j < filesArr.length; j++) {
             var isDir = fs.lstatSync(dir+'/'+filesArr[j]);
             if(isDir.isDirectory()){
                 getAllFiles(dir+'/'+filesArr[j]);
             }else {
                 readFile(dir+'/'+filesArr[j]);
             }
         }
     }
      function readFile(filename){
         origCode = fs.readFileSync(filename, 'utf8');
         ast = jsp.parse(origCode);
         ast = pro.ast_mangle(ast);
         ast= pro.ast_squeeze(ast);
         finalCode +=';'+ pro.gen_code(ast);
      }
      for(var i=0; i<flieIn.length; i++) {
         var isDir = fs.lstatSync(flieIn[i]);
         if(isDir.isDirectory()) {
             //为目录，获取目录下所有的文件。
             getAllFiles(flieIn[i]);
         }else {
             readFile(flieIn[i]);
         }
     }
 }
 jsMinifier(process.argv[2]);
 fs.writeFileSync(process.argv[3], finalCode, 'utf8');

运行：

node jsMinifier /data/samba/iyy_dev/index/assets/models/wirelesswebim need.js