grunt--自常用配置文件--js/样式压缩打包，sass工具整合使用

  // Project configuration.
module.exports = function(grunt) {
    // 使用严格模式
    ‘use strict‘;

    // 这里定义我们需要的任务
    grunt.initConfig({
     pkg: grunt.file.readJSON(‘package.json‘),
    //其他任务
     concat: {  
         options: {  
             separator: ‘;‘,  
             stripBanners: true  
         },  
         dist: {  
             src: [  
                 "js/EvenUtil.js",  
                 "js/smeite.js",  
                 "js/index.js"  
             ],  
             dest: "assets/js/default.js"  
         }  
     },  
     uglify: {  
         options: {  
         },  
         dist: {  
             files: {  
                 ‘assets/js/default.min.js‘: ‘assets/js/default.js‘  
             }  
         }  
     },  
     cssmin: {  
         options: {  
             keepSpecialComments: 0  
         },  
         compress: {  
             files: {  
                 ‘assets/css/default.css‘: [
                     "dist/css/test.css", 
                     "dist/css/common.css",  
                     "dist/css/public.css",  
                     "dist/css/index.css"  
                 ]  
             }  
         }  
     }, 
        // 设置任务，删除文件夹
    clean: {
        dist: ‘dist‘
    },

    // 通过sass编译成css文件
    sass: {
        dist: {
            files: [{
                expand: true,
                cwd: ‘scss‘,
                src: [‘*.scss‘],
                dest: ‘dist/css‘,
                ext: ‘.css‘
            }]
        }
    },
         // 检测改变，自动跑sass任务
    watch: {
        scripts: {
            files: [‘scss/*.scss‘,‘js/*.js‘],
            tasks: [‘sass‘,‘uglify‘,‘cssmin‘],
            options: {
                spawn: false
            }
        }
    }


    });

      grunt.loadNpmTasks(‘grunt-contrib-concat‘);  
      grunt.loadNpmTasks(‘grunt-contrib-uglify‘);  
      grunt.loadNpmTasks(‘grunt-contrib-cssmin‘);
    // 一定要引用着3个模块
    grunt.loadNpmTasks(‘grunt-contrib-clean‘);
    grunt.loadNpmTasks(‘grunt-contrib-sass‘);
    grunt.loadNpmTasks(‘grunt-contrib-watch‘);
    // 把需要跑的任务注册到default这里每次运行grunt的时候先删除dist，然后重新编译，最后监测文件夹的情况。
    grunt.registerTask(‘default‘, [‘clean:dist‘, ‘sass:dist‘, ‘watch‘, ‘concat‘, ‘uglify‘, ‘cssmin‘]);
};