从头编写HTML\CSS\Javascript是上个世纪的事情了，如今的JavaScript都是通过CoffeeScript这样的支持句法缩写的编辑器写成的。如果你希望写完JavaScript能够一个工具完成代码清理优化工作，Gulp就是你的不二之选，GulpJS类似Ant或Maven之于Java。
示例代码：
var gulp = require('gulp');var coffee = require('gulp-coffee');var concat = require('gulp-concat');var uglify = require('gulp-uglify');var imagemin = require('gulp-imagemin');var sourcemaps = require('gulp-sourcemaps');var del = require('del');var paths = { scripts: ['client/js/**/*.coffee', '!client/external/**/*.coffee'], images: 'client/img/**/*'};// Not all tasks need to use streams// A gulpfile is just another node program and you can use all packages available on npmgulp.task('clean', function(cb) { // You can use multiple globbing patterns as you would with `gulp.src` del(['build'], cb);});gulp.task('scripts', ['clean'], function() { // Minify and copy all JavaScript (except vendor scripts) // with sourcemaps all the way down return gulp.src(paths.scripts) .pipe(sourcemaps.init()) .pipe(coffee()) .pipe(uglify()) .pipe(concat('all.min.js')) .pipe(sourcemaps.write()) .pipe(gulp.dest('build/js'));});// Copy all static imagesgulp.task('images', ['clean'], function() { return gulp.src(paths.images) // Pass in options to the task .pipe(imagemin({optimizationLevel: 5})) .pipe(gulp.dest('build/img'));});// Rerun the task when a file changesgulp.task('watch', function() { gulp.watch(paths.scripts, ['scripts']); gulp.watch(paths.images, ['images']);});// The default task (called when you run `gulp` from cli)gulp.task('default', ['watch', 'scripts', 'images']);
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