gulp压缩整站方法（html/css/js/image）

注入package.json(此json文件需要自己在当前项目目录下创建即可--不能有注释)安装：

npm install gulp-uglify --save-dev

全局安装：

npm install gulp-uglify -g

　　

整站静态文件压缩配置文件gulpfile.js（html/css/image/js; 前提是安装下列require用到的模块）：

var gulp = require('gulp'),//基础库
    htmlmin = require('gulp-htmlmin'),//html压缩
	cssmin = require('gulp-minify-css'),//css压缩
	jshint = require('gulp-jshint'),//js检查
	uglify = require('gulp-uglify'),//js压缩
	imagemin = require('gulp-imagemin'),//图片压缩
    pngquant = require('imagemin-pngquant'),//图片深入压缩
	imageminOptipng = require('imagemin-optipng'),
    imageminSvgo = require('imagemin-svgo'),
    imageminGifsicle = require('imagemin-gifsicle'),
    imageminJpegtran = require('imagemin-jpegtran'),
	domSrc = require('gulp-dom-src'),
	cheerio = require('gulp-cheerio'),
	processhtml = require('gulp-processhtml'),
	Replace = require('gulp-replace'),
	cache = require('gulp-cache'),//图片压缩缓存
	clean = require('gulp-clean'),//清空文件夹
	conCat = require('gulp-concat'),//文件合并
	plumber=require('gulp-plumber'),//检测错误
	gutil=require('gulp-util');//如果有自定义方法，会用到
	

var date = new Date().getTime();

gulp.task('clean',function(){
	return gulp.src('min/**',{read:false})
		.pipe(clean());
});
function errrHandler( e ){
    // 控制台发声,错误时beep一下
    gutil.beep();
    gutil.log(e);
	this.emit('end');
}

gulp.task('cleanCash', function (done) {//清除缓存
    return cache.clearAll(done);
});
 
gulp.task('htmlmin', function () {
    var options = {
        removeComments: true,//清除HTML注释
        collapseWhitespace: true,//压缩HTML
        collapseBooleanAttributes: false,//省略布尔属性的值 <input checked="true"/> ==> <input />
        removeEmptyAttributes: false,//删除所有空格作属性值 <input id="" /> ==> <input />
        removeScriptTypeAttributes: true,//删除<script>的type="text/javascript"
        removeStyleLinkTypeAttributes: true,//删除<style>和<link>的type="text/css"
        minifyJS: true,//压缩页面JS
        minifyCSS: true//压缩页面CSS
    };
    gulp.src(['index/*.htm','index/*.html'])		
		.pipe(plumber({errorHandler:errrHandler}))		
		.pipe(Replace(/_VERSION_/gi, date))
		.pipe(processhtml())
        .pipe(htmlmin(options))
        .pipe(gulp.dest('min'));
});
gulp.task('cssmin', function(){	
    gulp.src('index/**/*.css')
		.pipe(conCat('css/index.min.css'))
		.pipe(plumber({errorHandler:errrHandler}))
        .pipe(cssmin({
            advanced: false,//类型：Boolean 默认：true [是否开启高级优化（合并选择器等）]
            compatibility: 'ie7',//保留ie7及以下兼容写法 类型：String 默认：''or'*' [启用兼容模式； 'ie7'：IE7兼容模式，'ie8'：IE8兼容模式，'*'：IE9+兼容模式]
            keepBreaks: false,//类型：Boolean 默认：false [是否保留换行]
            keepSpecialComments: '*'
            //保留所有特殊前缀 当你用autoprefixer生成的浏览器前缀，如果不加这个参数，有可能将会删除你的部分前缀
        }))		
        .pipe(gulp.dest('min'));
		
});
gulp.task('jsmin', function () {
    gulp.src(['index/js/*.js','!index/**/{text1,text2}.js'])
		.pipe(conCat('js/index.min.js'))
		.pipe(plumber({errorHandler:errrHandler}))
        .pipe(uglify({
            mangle: {except: ['require' ,'exports' ,'module' ,'$']},//类型：Boolean 默认：true 是否修改变量名
            compress: true,//类型：Boolean 默认：true 是否完全压缩
            preserveComments: 'false' //保留所有注释
        }))
        .pipe(gulp.dest('min'));
});  
gulp.task('imagemin', function () {
    gulp.src('index/**/*.{png,jpg,gif,ico}')
		.pipe(plumber({errorHandler:errrHandler}))
        .pipe(cache(imagemin({		
            progressive: true, //类型：Boolean 默认：false 无损压缩jpg图片           
			svgoPlugins: [{removeViewBox: false}],//不要移除svg的viewbox属性
            use: [pngquant(),imageminJpegtran({progressive: true})
            , imageminGifsicle({interlaced: true}),imageminOptipng({optimizationLevel:3}), imageminSvgo()] //使用pngquant深度压缩png图片的imagemin插件           
        })))
        .pipe(gulp.dest('min'));
});
gulp.task('default',['clean'],function(){	
	gulp.start('cssmin','htmlmin','jsmin','imagemin');
});

　　

package.json(例子) package.json详细介绍：https://docs.npmjs.com/files/package.json

（package.json  npm init 命令行创建文件方法http://blog.csdn.net/liyanhui1001/article/details/44020235 ）

{
  "name": "web",
  "version": "1.0.0",
  "description": "my text",
  "main": "gulpfile.js",
  "dependencies": {
    "gulp": "^3.9.1",
    "gulp-cache": "^0.4.5",
    "gulp-concat": "^2.6.0",
    "gulp-htmlmin": "^2.0.0",
    "gulp-imagemin": "^3.0.1",
    "gulp-jshint": "^2.0.1",
    "gulp-minify-css": "^1.2.4",
    "gulp-plumber": "^1.1.0",
    "gulp-uglify": "^1.5.4",
    "gulp-util": "^3.0.7",
    "imagemin-pngquant": "^5.0.0",
    "jshint": "^2.9.2",
    "gulp-clean": "^0.3.2"
  },
  "devDependencies": {
    "gulp-cheerio": "^0.6.2",
    "gulp-dom-src": "^0.2.0",
    "gulp-jslint": "^1.0.1",
    "gulp-processhtml": "^1.1.0",
    "gulp-rename": "^1.2.2",
    "gulp-replace": "^0.5.4",
    "gulp-webpack": "^1.5.0",
    "imagemin-gifsicle": "^5.1.0",
    "imagemin-jpegtran": "^5.0.2",
    "imagemin-optipng": "^5.1.1",
    "imagemin-svgo": "^5.1.0",
    "webpack": "^1.13.1"
  },
  "scripts": {
    "test": "echo "Error: no test specified" && exit 1"
  },
  "keywords": [
    "web"
  ],
  "author": "yl",
  "license": "ISC"
}

　　

devDependencies里的内容即为你安装gulp的模块插件名称和版本号！

最后，node.js里指定到当前项目目录下输入gulp命令即可：

gulp default