前言:
而今小伙伴们对“css文件压缩”可能比较关注,小伙伴们都需要剖析一些“css文件压缩”的相关内容。那么小编也在网络上汇集了一些关于“css文件压缩””的相关文章,希望朋友们能喜欢,看官们快快来了解一下吧!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:
(package.json npm init 命令行创建文件方法 )
{
"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
这里小编是一个有着5年工作经验的前端工程师,关于web前端有一个完整学习web前端的路线,学习材料和工具。需要的伙伴可以私信我,发送“前端”就可以获取领取地址,免费送给大家。对于学习web前端有任何问题(学习方法,学习效率,如何就业)都可以问我。希望你也能凭自己的努力,成为下一个优秀的程序员!非常感谢大家的关注,让小编更有动力写文,比心。
标签: #css文件压缩