###gulp.js学习笔记 gulp.js 是类似grunt的一个自动化工具，相对比于grunt的config文件的复杂，gulp.js只需要5个函数即可。（参考地址：http://www.codersgrid.com/2014/01/11/gulp-js-streaming-build-tool-beats-grunt-js/）
####gulp的一个demo

 
//gulpfile 
var gulp = require(‘gulp’);
gulp.task('default’,function(){
//register a task
//some code
})

gulp中的方法很有意思的一点在于支持pipe管道，这个方法比grunt的命令更加清晰，下面我们看下用法

 
/*
 gulpfile for my Ros project
 2014/02/23
 */
var gulp = require('gulp')
 ,uglify = require('gulp-uglify')
 ,concat = require('gulp-concat')
 ,size = require('gulp-size');
var filePath = {
appScriptPath:{
src:’app/scripts/*/.js’,
dest:’app/build/js’
}
}
gulp.task('default’,function(){
return gulp.src(filePath.appScriptPath.src)
.pipe(uglify())
.pipe(concat(‘main.js’))
.pipe(gulp.dest(filePath.appScriptPath.dest));
});

####实际项目中需要的module #####增量编译 gulp-changed gulp-cached gulp-changed

 
var gulp = require('gulp');
var changed = require('gulp-changed');
var ngmin = require('gulp-ngmin'); // just as an example
var SRC = 'src/*.js’;
var DEST = 'dist’;
gulp.task('default’, function () {
gulp.src(SRC)
.pipe(changed(DEST)) //配置DEST目录
// ngmin will only get the files that
// changed since the last time it was run
.pipe(ngmin())
.pipe(gulp.dest(DEST));
});