gulpfile.js

var gulp = require("gulp"),
	uglify = require('gulp-uglify'),
	cleanCss = require('gulp-clean-css'),
	concat = require('gulp-concat');
var htmlmin = require('gulp-htmlmin'),
	clean = require('gulp-clean');

gulp.task('default',function(){

});

gulp.task('clean',function(){
	return gulp.src('./tmp').pipe(clean());
});

gulp.task('css',['clean'],function(){
	return gulp.src(['./dev/**/*.css'])
			.pipe(cleanCss())
			.pipe(gulp.dest('./tmp/'));
});

gulp.task('js',['clean'], function(){//压缩js
	return gulp.src(['./dev/**/*.js'])
			.pipe(uglify())
			.pipe(gulp.dest('./tmp/'));
});

gulp.task('img',['clean'], function(){//复制图片
	return gulp.src(['./dev/**/*.{JPG,jpg,png,gif}'])
			.pipe(gulp.dest('./tmp/'));
});
gulp.task('font',['clean'], function(){//复制fonts文件
	return gulp.src(['./dev/images/fonts/**/**'])
			.pipe(gulp.dest('./tmp/images/fonts/'));
});

gulp.task('minify',['clean'], function() {
  return gulp.src(['./dev/**/*.html'])
    .pipe(htmlmin({collapseWhitespace: true}))
    .pipe(gulp.dest('./tmp/'));
});

gulp.task('all',['css','js','minify','img','font'],function(){
	return gulp.src('./tmp/**/*').pipe(gulp.dest('./'));
});