gulp的安装和使用

 1 {
 2   "name": "test",   //项目名称（必须）
 3   "version": "1.0.0",   //项目版本（必须）
 4   "description": "This is for study gulp project !",   //项目描述（必须）
 5   "homepage": "",   //项目主页
 6   "repository": {    //项目资源库
 7     "type": "git",
 8     "url": "https://git.oschina.net/xxxx"
 9   },
10   "author": {    //项目作者信息
11     "name": "surging",
12     "email": "surging2@qq.com"
13   },
14   "license": "ISC",    //项目许可协议
15   "devDependencies": {    //项目依赖的插件
16     "gulp": "^3.8.11",
17     "gulp-less": "^3.0.0"
18   }
19 }

 1 /*!
 2  * gulp
 3  * $ npm install gulp-sass gulp-autoprefixer gulp-minify-css gulp-css-spriter gulp-jshint gulp-uglify gulp-imagemin gulp-rename gulp-concat gulp-htmlmin gulp-notify gulp-cache gulp-livereload --save-dev
 4  */
 5 // 加载插件
 6 var gulp = require('gulp'),//加载gulp
 7     sass = require('gulp-sass'),//编译sass
 8     autoprefixer = require('gulp-autoprefixer'),//补全浏览器前缀
 9     minifycss = require('gulp-minify-css'),//压缩css为min
10     spriter = require('gulp-css-spriter'),//图片合并css精灵
11     jshint = require('gulp-jshint'),//js查错
12     uglify = require('gulp-uglify'),//压缩js
13     imagemin = require('gulp-imagemin'),//压缩图片
14     rename = require('gulp-rename'),//重命名gulp
15     concat = require('gulp-concat'),//合并js
16     html = require('gulp-htmlmin'),//压缩HTML
17     notify = require('gulp-notify'),//显示信息
18     cache = require('gulp-cache'),//压缩图片过滤（仅修改图片压缩）
19     livereload = require('gulp-livereload');// 网页自动刷新
20 
21 //处理样式
22 gulp.task('styles', function() { var timestamp = +new Date();
23     return gulp.src('style/**/*.scss')//表示css及子文件夹中的所以文件
24         .pipe(sass())
25         .pipe(autoprefixer({browsers:['last 3 versions','ie >= 10','ie_mob >= 10','ff >= 30','chrome >= 34','safari >= 6','opera >= 12.1','ios >= 6','android >= 4.4','bb >= 10','and_uc 9.9']}))//支持浏览器种类
26         .pipe(rename({ suffix: '.min' }))//重命名加min后缀
27 //        .pipe(spriter({
28 //            'spriteSheet': 'images/sprite'+timestamp+'.png',// 生成的spriter的位置
29 //            'pathToSpriteSheetFromCSS': '../images/sprite'+timestamp+'.png'// 生成样式文件图片引用地址的路径,如：backgound:url(../images/sprite20324232.png)
30 //        }))
31         .pipe(minifycss({keepBreaks: true}))//分行显示
32         .pipe(gulp.dest('css'))//保存到指定目录
33         .pipe(notify({ message: 'Styles task complete' }));//打印信息
34 });
35 
36 ////图片精灵
37 //gulp.task('spriter',function() {
38 //    var timestamp = +new Date();
39 //    //需要自动合并雪碧图的样式文件
40 //    return gulp.src('css/*.css')
41 //        .pipe(spriter({
42 //            // 生成的spriter的位置
43 //            'spriteSheet': 'images/sprite'+timestamp+'.png',
44 //            // 生成样式文件图片引用地址的路径,如：backgound:url(../images/sprite20324232.png)
45 //            'pathToSpriteSheetFromCSS': 'images/sprite'+timestamp+'.png'
46 //        }))
47 //        .pipe(minifycss())
48 //        .pipe(gulp.dest('css'));
49 //});
50 
51 
52 //处理js
53 gulp.task('scripts', function() {
54     return gulp.src('script/**/*.js')
55         .pipe(jshint())
56         .pipe(jshint.reporter('default'))
57         //.pipe(concat('all.js'))
58         .pipe(rename({ suffix: '.min' }))
59         .pipe(uglify())
60         .pipe(gulp.dest('js'))
61         .pipe(notify({ message: 'Scripts task complete' }));
62 });
63 
64 
65 //处理图片
66 //gulp.task('images', function() {
67 //    return gulp.src(['pic/**/*.png','pic/**/*.jpg'])
68 //        .pipe(cache(imagemin({ optimizationLevel: 5, progressive: true, interlaced: true })))
69 //        .pipe(gulp.dest('images'))
70 //        .pipe(notify({ message: 'Images task complete2' }));
71 //});
72 
73 //默认执行
74 gulp.task('default', function() {
75     gulp.start('styles', 'scripts');
76 });
77 
78 // 监测变更执行gulp
79 gulp.task('watch', function() {
80     gulp.watch('style/**/*.scss', ['styles']);//处理样式
81     gulp.watch('script/**/*.js', ['scripts']);//处理js
82     //gulp.watch('pic/**', ['images']);//处理图片
83     // Create LiveReload server
84     livereload.listen();
85     // Watch any files in assets/, reload on change
86     gulp.watch(['style/**/*.scss','script/**/*.js']).on('change', livereload.changed);
87 });