gulp.基础

1.安装

　　全局安装

npm install --global gulp

　　作为项目的开发依赖安装

npm install gulp --save-dev

2.在根目录下创建一个名为gulpfile.js的文件

let gulp = require('gulp');
let cleanCSS = require('gulp-clean-css');//css 打包
let concat  = require('gulp-concat');//文件整合
let uglify = require('gulp-uglify');//js压缩插件
let zip = require('gulp-zip');//zip压缩文件
let less = require('gulp-less');//less压缩

gulp.task('minify-css', () => {
  return gulp.src('css/imdex.css')
      .pipe(concat('imdex.min.css'))
    .pipe(cleanCSS())
    .pipe(gulp.dest('./css'));
});

gulp.task('uglify-js',()=>{
    return gulp.src('./js/*.js')
        .pipe(uglify())
        .pipe(concat)
        .pipe(gulp.dest('./js'))
})

gulp.task('zip-suo',()=>{
    return gulp.src('./src/*')
        .pipe(zip())
        .pipe(gulp.dest('./'))
})

gulp.task('testLess', function () {
    gulp.src('src/less/index.less') //该任务针对的文件
        .pipe(less()) //该任务调用的模块
        .pipe(cleanCSS())
        .pipe(gulp.dest('src/css')); //将会在src/css下生成index.css
});

gulp.task('default',['minify-css','uglify-js','testLess']);