ionic如何uglify和minify你的js,css,image,png....

Install:
   1.ionic start myapp blank 

    2.cd myapp

    3.npm install cordova-uglify or npm install cordova-uglify --legacy-bundling
Useage:
1.找到hooks/uglify-config.json
2.将第一行代码"alwaysRun": false 改为"alwaysRun": true,
3.运行ionic platform add android,ionic build android 
4.查看plaforms/android/assets/www/目录下的所有文件，是否uglify和minify

U福利：(自动js纠错功能) 
1.安装：
npm install jshint

npm install async
2.手动新建文件
 在hooks目录下新建文件夹“before_prepare”,该文件夹下新建文件“02_jshint.js”
 将以下内容粘贴到新建文件里:

 #!/usr/bin/env node

 var fs = require('fs');
 var path = require('path');
 var jshint = require('jshint').JSHINT;
 var async = require('async');

 var foldersToProcess = [
     'js'
 ];

 foldersToProcess.forEach(function(folder) {
     processFiles("www/" + folder);
 });

 function processFiles(dir, callback) {
     var errorCount = 0;
     fs.readdir(dir, function(err, list) {
         if (err) {
             console.log('processFiles err: ' + err);
             return;
         }
         async.eachSeries(list, function(file, innercallback) {
             file = dir + '/' + file;
             fs.stat(file, function(err, stat) {
                 if(!stat.isDirectory()) {
                     if(path.extname(file) === ".js") {
                         lintFile(file, function(hasError) {
                             if(hasError) {
                                 errorCount++;
                             }
                             innercallback();
                         });
                     } else {
                         innercallback();
                     }
                 } else {
                     innercallback();
                 }
             });
         }, function(error) {
             if(errorCount > 0) {
                 process.exit(1);
             }
         });
     });
 }

 function lintFile(file, callback) {
     console.log("Linting " + file);
     fs.readFile(file, function(err, data) {
         if(err) {
             console.log('Error: ' + err);
             return;
         }
         if(jshint(data.toString())) {
             console.log('File ' + file + ' has no errors.');
             console.log('-----------------------------------------');
             callback(false);
         } else {
             console.log('Errors in file ' + file);
             var out = jshint.data(),
             errors = out.errors;
             for(var j = 0; j < errors.length; j++) {
                 console.log(errors[j].line + ':' + errors[j].character + ' -> ' + errors[j].reason + ' -> ' +
 errors[j].evidence);
             }
             console.log('-----------------------------------------');
             callback(true);
         }
     });
 }

3.重新运行ionic build android

　将在编译过程看到一下代码
 
表示你的js代码没有错误！