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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https://www.dvy.com.cn/2017/09/12/3628.html )

{
  "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
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