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导入工具包 ``` var gulp = require('gulp');                            //导入工具包 require('node_modules里对应模块') var fileinclude = require('gulp-file-include');        //html include导入 var rev = require('gulp-rev-append');                  //添加版本号 var less = require('gulp-less');                       //less转译css var autoprefixer = require('gulp-autoprefixer');       //css自动添加前缀 var htmlmin = require('gulp-htmlmin');                 //压缩html var imagemin = require('gulp-imagemin');               //压缩图片 var cssmin = require('gulp-clean-css');                //压缩css var uglify= require('gulp-uglify');                    //压缩js var gulpSequence = require('gulp-sequence');           //gulp任务序列加载 var concat = require('gulp-concat');                   //文件合并 var cheerio = require('gulp-cheerio');                 //替换页面引用路径 var rename= require('gulp-rename');                    //替换文件名 ``` 设置路径 ``` var PATH = {     src:'./src/',                                      //源码     dev:'./dev/',                                      //开发     build:'./dist/'                                    //发布 } ``` html include ``` gulp.task('htmlinclude', function() {     return gulp.src([ PATH.src+'html/**/*.html','!'+PATH.src+'html/template/*.html']) //该任务针对的文件         .pipe(fileinclude({                 prefix: '@@',//变量前缀 @@include                 basepath: '@file',//引用文件路径                 indent:true//保留文件的缩进             }))         .pipe(gulp.dest( PATH.dev + 'html' )); //输出文件路径 }); ``` html 添加版本号 ``` gulp.task('addversion', function () {     return gulp.src( PATH.dev + 'html/*.html') //该任务针对的文件         .pipe(rev()) //该任务调用的模块         .pipe(gulp.dest( PATH.dev + 'html' )); //输出文件路径 }); ``` less转css ``` gulp.task('less2css', function () {     return gulp.src([ PATH.src + 'less/*.less','!'+PATH.src+'less/common.less' ]) //该任务针对的文件         .pipe(less()) //该任务调用的模块         .pipe(gulp.dest( PATH.dev + 'css')) //输出文件路径 }); ``` 添加css前缀 ``` gulp.task('addprefix', function () {     return gulp.src( PATH.dev + 'css/*.css')         .pipe(autoprefixer({                 browsers: ['last 2 versions', 'Android >= 4.0'],                 cascade: true, //是否美化属性值 默认:true 像这样:                 //-webkit-transform: rotate(45deg);                 // transform: rotate(45deg);                 remove:true //是否去掉不必要的前缀 默认:true             }))         .pipe(gulp.dest( PATH.dev + 'css')) }); ``` 复制文件 ``` gulp.task('devjs',function(){     gulp.src( PATH.src + 'js/*' )         .pipe(gulp.dest( PATH.dev + 'js' ))     return gulp.src( PATH.src+'img/*')         .pipe(gulp.dest( PATH.dev + 'img' )) }); ``` 压缩html ``` gulp.task('htmlmin', function () {     return gulp.src( PATH.dev + 'html/*.html') //该任务针对的文件         .pipe(htmlmin({ //该任务调用的模块                 removeComments: true,//清除HTML注释                 collapseWhitespace: true,//压缩HTML                 collapseBooleanAttributes: true,//省略布尔属性的值 ==>                 removeEmptyAttributes: true,//删除所有空格作属性值 ==>                 removeScriptTypeAttributes: true,//删除的type="text/javascript"                 removeStyleLinkTypeAttributes: true,//删除和的type="text/css"                 minifyJS: true,//压缩页面JS                 minifyCSS: true//压缩页面CSS             }))         .pipe(gulp.dest( PATH.build + 'html')); //输出文件路径 }); ``` 压缩img ``` gulp.task('imagemin', function () {     return gulp.src( PATH.dev + 'img/*.{png,jpg,gif,ico}') //该任务针对的文件         .pipe(imagemin()) //该任务调用的模块         .pipe(gulp.dest( PATH.build + 'img')); //输出文件路径 }); ``` 压缩css ``` gulp.task('cssmin', function () {     return gulp.src( PATH.dev + 'css/*.css')         .pipe(cssmin()) //该任务调用的模块         .pipe(gulp.dest( PATH.build + 'css')) //输出文件路径 }) ``` 压缩Js ``` gulp.task('jsmin', function () {     return gulp.src([ PATH.dev + 'js/*.js'])//该任务针对的文件         .pipe(uglify({ //该任务调用的模块                 mangle: true, //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             }))         .pipe(gulp.dest( PATH.build + 'js')); //输出文件路径 }); ``` 序列执行 ``` gulp.task('devhtml',gulpSequence('htmlinclude','addversion')); gulp.task('devcss',gulpSequence('less2css','addprefix')); gulp.task('dev',gulpSequence(['devhtml','devcss','devjs','devimg'])); gulp.task('build',gulpSequence('dev',['htmlmin','imagemin','cssmin','jsmin'])); ``` 默认任务 ``` gulp.task('default',['build']); ``` watch监听 ``` gulp.task('watch',function(){     gulp.watch( PATH.src + 'less/**/*.less',['less2css']);     gulp.watch( PATH.src + 'html/**/*.html',['htmlinclude']);     gulp.watch( PATH.src + 'js/**/*.js',['devjs']); }) ``` 备注 ``` //gulp.task(name,[deps], fn) 定义任务 name:任务名称 deps:依赖任务名称 fn:回调函数 //gulp.src(globs,[options]) 执行任务处理的文件 globs:处理的文件路径(字符串或者字符串数组) //gulp.src(['js/*.js', '!src/js/**/{test1,test2}.js'])//该任务针对的文件(以及忽略的文件)写法 //gulp.dest(path,[options]) 处理完后文件生成路径 ```