gulp應用

$ npm install gulp -g

gulp安裝到全域環境下，能夠存取gulp的CLI

$ npm install gulp --save-dev

將gulp安裝到本地端的項目內，並在package.json內的devDependencies註冊。

使用npm install 安裝下列模塊

• 編譯Sass (gulp-ruby-sass)
• Autoprefixer (gulp-autoprefixer)
• 縮小化(minify)CSS (gulp-minify-css)
• JSHint (gulp-jshint)
• 拼接 (gulp-concat)
• 醜化(Uglify) (gulp-uglify)
• 圖片壓縮 (gulp-imagemin)
• 即時重整(LiveReload) (gulp-livereload)
• 清理檔案 (gulp-clean)
• 圖片快取，只有更改過得圖片會進行壓縮 (gulp-cache)
• 更動通知 (gulp-notify)

使用npm install 安裝下列模塊

var gulp = require('gulp'), sass = require('gulp-ruby-sass'), autoprefixer = require('gulp-autoprefixer'), minifycss = require('gulp-minify-css'), jshint = require('gulp-jshint'), uglify = require('gulp-uglify'), imagemin = require('gulp-imagemin'), rename = require('gulp-rename'), clean = require('gulp-clean'), concat = require('gulp-concat'), notify = require('gulp-notify'), cache = require('gulp-cache'), livereload = require('gulp-livereload');

示例文件

//創建一個gulpfile.js檔案，載入外掛：
var gulp = require('gulp'),
    sass = require('gulp-sass'),
    autoprefixer = require('gulp-autoprefixer'),
    minifycss = require('gulp-minify-css'),
    jshint = require('gulp-jshint'),
    uglify = require('gulp-uglify'),
    imagemin = require('gulp-imagemin'),
    rename = require('gulp-rename'),
    clean = require('gulp-clean'),
    concat = require('gulp-concat'),
    notify = require('gulp-notify'),
    cache = require('gulp-cache'),
    livereload = require('gulp-livereload');

//gulp.taskAPI用來創建任務。能夠透過終端機輸入$ gulp styles指令來執行任務。
gulp.task('styles', function() {  
  return gulp.src('css/sass/pub.scss')
    .pipe(sass({ style: 'expanded' ,}))
    .pipe(autoprefixer('last 2 version', 'safari 5', 'ie 8', 'ie 9', 'opera 12.1', 'ios 6', 'android 4'))
    .pipe(gulp.dest('dist/css'))
    .pipe(rename({suffix: '.min'}))
    .pipe(minifycss())
    .pipe(gulp.dest('dist/css'))
    .pipe(notify({ message: 'Styles task complete' }));
});

//JSHint，拼接及縮小化JavaScript
gulp.task('scripts', function() {  
  return gulp.src('src/scripts/**/*.js')
    .pipe(jshint('.jshintrc'))
    .pipe(jshint.reporter('default'))
    .pipe(concat('main.js'))
    .pipe(gulp.dest('dist/js'))
    .pipe(rename({suffix: '.min'}))
    .pipe(uglify())
    .pipe(gulp.dest('dist/js'))
    .pipe(notify({ message: 'Scripts task complete' }));
});

//對全部來源圖片進行imagemin處理。
gulp.task('images', function() {  
  return gulp.src('css/img/**/*')
    .pipe(imagemin({ optimizationLevel: 3, progressive: true, interlaced: true }))
    .pipe(gulp.dest('dist/assets/img'))
    .pipe(notify({ message: 'Images task complete' }));
});

//佈署以前，清除目的地目錄並重建檔案–以防任何已經被刪除的來源檔案遺留在目的地目錄之中
gulp.task('clean', function() {  
  return gulp.src(['dist/assets/css', 'dist/assets/js', 'dist/assets/img'], {read: false})
    .pipe(clean());
});
//預設任務，當只輸入$ gulp指令時執行的任務
gulp.task('default', ['clean'], function() {  
    gulp.start('styles', 'scripts', 'images');
});


//看守檔案，並在更動發生後執行相關任務
gulp.task('watch', function() {

  // 看守全部.scss檔
  gulp.watch('css/sass/*.scss', ['styles']);

  // 看守全部.js檔
 // gulp.watch('src/scripts/**/*.js', ['scripts']);

  // 看守全部圖片檔
  gulp.watch('css/img/**/*', ['images']);

//即時重整(LiveReload),Gulp處理檔案更動後，自動從新整理頁面。

  // 創建即時重整伺服器
  var server = livereload();

  // 看守全部位在 dist/  目錄下的檔案，一旦有更動，便進行重整
  gulp.watch(['dist/**']).on('change', function(file) {
    server.changed(file.path);
  });

});

gulp 命令

用 gulp +任務名 運行相應配置 用 gulp watch 監察目錄變化並運行相應配置

若是是用gulp-sass ,它是基於node-sass的 ,並保持對應模塊名一致，gulp-sass不基於ruby而是c#性能更好。