Gulp简单应用

/**
* Created by Administrator on 2016/11/10.
*/
const gulp=require("gulp");
const minify=require("gulp-minify");
const concat=require("gulp-concat");
const buildDirName = "build";
gulp.task("copy_html_files",function () {
return gulp.src("src/*.html").pipe(gulp.dest(buildDirName))
});
gulp.task("compile_js_files",function () {
return gulp.src([
"src/Hello.js",
"src/Main.js"
]).pipe(concat("index.js"))
.pipe(minify())
.pipe(gulp.dest(buildDirName));
});
gulp.task("default",["copy_html_files","compile_js_files"],function () {
});
/*自动监测 html 文件的变化*/
gulp.watch("src/*.html",["copy_html_files"]);
gulp.watch("src/*.js",["compile_js_files"]);