gulp压缩整站方法（html/css/js/image）

Posted 2023-03-21

参考技术A 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