gulp入门与一些基本设置

这里是gulp入门的一些操作，实现了编译sass文件、压缩、合并、添加版本号等基本功能。

友情提示，如果npm出现无法下载可以安装 cnpm。在安装完Nodejs 后 

npm install cnpm -g --registry=https://registry.npm.taobao.org

完成后可

cnpm -v

查看安装结果

1.安装Nodejs

选择合适的版本下载Nodejs

2.安装全局gulp

npm install --global gulp-cli

3.进入项目目录（之后的操作全是在此目录下进行）

cd desktop/myprogram

4.初始化package.json

npm init

5.安装项目gulp

npm install --save-dev gulp

6.安装插件

npm install gulp-htmlmin gulp-imagemin imagemin-pngcrush gulp-jshint jshint  gulp-uglify gulp-notify gulp-useref gulp-load-plugins  gulp-clean-css gulp-sass  gulp-if gulp-users gulp-rev gulp-rev-collector  —save-dev

7.新建gulpfile.js

var gulp = require('gulp');
    gulp.task('default', function() {
        // place code for your default task here
    });

8.测试

在终端输入命令

gulp

9.附上index.html（压缩css、js部分） 、package.json 和 gulpfile.js

index.html

<link rel="shortcut icon" href="images/favicon.ico">
<!-- build:css lib/main.css -->
<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css">
<link rel="stylesheet" type="text/css" href="css/main.css">
<link rel="stylesheet" type="text/css" href="css/common.css">
<!-- endbuild -->

<!-- build:js lib/main.js -->
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/bootstrap.min.js"></script>
<script type="text/javascript" src="js/route.js"></script>
<script type="text/javascript" src="js/main.js"></script>
<!-- endbuild -->

package.json

"devDependencies": {
    "del": "^2.2.0",
    "gulp": "^3.9.1",
    "gulp-clean-css": "^2.0.8",
    "gulp-concat": "^2.6.0",
    "gulp-htmlmin": "^2.0.0",
    "gulp-if": "^2.0.1",
    "gulp-imagemin": "^3.0.1",
    "gulp-jshint": "^2.0.1",
    "gulp-load-plugins": "^1.2.4",
    "gulp-notify": "^2.2.0",
    "gulp-rev": "^7.0.0",
    "gulp-rev-collector": "^1.0.3",
    "gulp-sass": "^2.3.1",
    "gulp-sequence": "^0.4.5",
    "gulp-uglify": "^1.5.3",
    "gulp-useref": "^3.1.0",
    "imagemin-pngcrush": "^5.0.0",
    "jshint": "^2.9.2"
  }

gulpfile.js

'use strict';
var gulp = require('gulp'),
    $ = require("gulp-load-plugins")(),
    sass = require("gulp-sass"),
    rev = require("gulp-rev"),
    del = require('del');

gulp.task('default', function() {
  gulp.run('styles', 'jshint');
  gulp.watch('src/styles/*.scss', ['styles']);
});

gulp.task('build', $.sequence('cpfiles', 'useref', 'cphtml', 'revfile',
          'revhtml', 'delfiles', 'img','htmlmin'));


gulp.task('htmlmin', function() {
  return gulp.src(['dist/*/*.html', 'dist/*.html'])
    .pipe($.htmlmin({collapseWhitespace: true}))
    .pipe(gulp.dest('dist/'))
    .pipe($.notify({ message: 'htmlmin task done' }));
});

gulp.task('delfiles', function(){
  del([
    'dist/js',
    'dist/css',
    'dist/styles',
    'dist/lib/index.html',
    'dist/lib/rev-manifest.json'
  ]);
})

gulp.task('revhtml', function () {
  return gulp.src(['dist/lib/rev-manifest.json', 'dist/lib/index.html'])
    .pipe($.revCollector())
    .pipe(gulp.dest('dist/'))
    .pipe($.notify({ message: 'revhtml task done' }));
});

gulp.task('revfile', function(){
  return gulp.src(['dist/lib/*.css', 'dist/lib/*.js'])
    .pipe($.rev())
    .pipe(gulp.dest('dist/lib/'))
    .pipe(rev.manifest({
      path: 'rev-manifest.json',
      merge: true
    }))
    .pipe(gulp.dest("dist/lib/"))
    .pipe($.notify({ message: 'revfile task done' }));
});

gulp.task('cphtml', function(){
  return gulp.src('dist/*.html')
    .pipe(gulp.dest('dist/lib/'))
    .pipe($.notify({ message: 'copyhtml task done' }));
})

gulp.task('useref', function() {
  return gulp.src('dist/*.html')
    .pipe($.useref())
    .pipe($.if('*.js', $.uglify()))
    .pipe($.if('*.css', $.cleanCss({compatibility: 'ie8'})))
    .pipe(gulp.dest('dist/'))
    .pipe($.notify({ message: 'useref task done' }));
});

gulp.task('cpfiles', ['styles'], function(){
  return gulp.src(['src/*/*','src/*'])
    .pipe(gulp.dest('dist/'))
    .pipe($.notify({ message: 'copyfiles task done' }));
})

gulp.task('img', function() {
  return gulp.src('dist/images/*.*')
    .pipe($.imagemin({
        progressive: true,
        svgoPlugins: [{removeViewBox: false}],
        use: [$.imagemin()]
    }))
    .pipe(gulp.dest('dist/images/'))
    .pipe($.notify({ message: 'img task done' }));
});

gulp.task('styles', function(){
  return gulp.src('src/styles/*.scss')
    .pipe(sass().on('error', sass.logError))
    .pipe(gulp.dest('src/css'))
    .pipe($.notify({ message: 'sass task done' }));
})

gulp.task('jshint', function() {
  return gulp.src(['src/js/main.js','src/js/route.js'])
    .pipe($.jshint())
    .pipe($.jshint.reporter('default'))
    .pipe($.notify({ message: 'jshint task done' }));
});

gulp.task('clean', function(){
  del([
    'dist/'
    ]);
})

文件结构,上层为 desktop/myprogram/