Gulp 前端最佳化js和css工具

$ npm install gulp-cli -g

$ npm install gulp --save-dev

$ npm install gulp-concat
$ npm install gulp-cssmin
$ npm install gulp-uglify
$ npm install rimraf

/// <binding BeforeBuild='min' Clean='clean' />
"use strict";
var gulp = require(“gulp”),
rimraf = require(“rimraf”),
concat = require(“gulp-concat”),
cssmin = require(“gulp-cssmin”),
uglify = require(“gulp-uglify”);
var paths = {
webroot: “./wwwroot/”
};
paths.js = paths.webroot + “js//*.js”;
paths.minJs = paths.webroot + “js//.min.js”;
paths.css = paths.webroot + “css/**/.css”;
paths.minCss = paths.webroot + “css/**/*.min.css”;
paths.concatJsDest = paths.webroot + “assets/site.min.js”;
paths.concatCssDest = paths.webroot + “assets/site.min.css”;
gulp.task(“clean:js”, function (cb) {
rimraf(paths.concatJsDest, cb);
});
gulp.task(“clean:css”, function (cb) {
rimraf(paths.concatCssDest, cb);
});
gulp.task(“clean”, [“clean:js”, “clean:css”]);
gulp.task(“min:js”, function () {
return gulp.src([paths.js, “!” + paths.minJs], { base: “.” })
.pipe(concat(paths.concatJsDest))
.pipe(uglify())
.pipe(gulp.dest(”."));
});
gulp.task(“min:css”, function () {
return gulp.src([paths.css, “!” + paths.minCss])
.pipe(concat(paths.concatCssDest))
.pipe(cssmin())
.pipe(gulp.dest(”."));
});
gulp.task(“min”, [“min:js”, “min:css”]);
gulp.task(“default”, function () {
gulp.watch(paths.js, function () {
gulp.run(“min:js”);
});
gulp.watch(paths.css, function () {
gulp.run(“min:css”);
});
});

$ gulp clean
$ gulp min