> npm install lodash

var _ = require('lodash');

var myArray = ['spring','summer','winter'];

_.each(myArray, function(s) {
    console.log(s);
});

Example

2. create demo.js file, and require package.

1. in cmd : npm package lodash

> node demo

3. in cmd : run demo.js

> npm install lodash

var _ = require('lodash');

var myArray = ['spring','summer','winter'];

_.each(myArray, function(s) {
    console.log(s);
});

Example

2. create demo.js file, and require package.

1. in cmd : npm package lodash

> node demo

3. in cmd : run demo.js

> npm install lodash

var _ = require('lodash');

var myArray = ['spring','summer','winter'];

_.each(myArray, function(s) {
    console.log(s);
});

Example

2. create demo.js file, and require package.

1. in cmd : npm package lodash

> node demo

3. in cmd : run demo.js

> npm install lodash

var _ = require('lodash');

var myArray = ['spring','summer','winter'];

_.each(myArray, function(s) {
    console.log(s);
});

Example

2. create demo.js file, and require package.

1. in cmd : npm package lodash

> node demo

3. in cmd : run demo.js

Demo - express

var express = require('express');

var app = express();

app.listen(3000);

> npm install express

app.js

> node app

Demo - express

var express = require('express');

var app = express();

app.get('/', function (req, res) {
  res.sendFile(__dirname + '/index.html');
});

app.listen(3000);

app.js

Demo - express

var express = require('express');
var app = express();

var data = {
  '001':{'name':'Jayson','ext':'#7540'},
  '002':{'name':'Test','ext':'#9999'}
  };

app.get('/api', function (req, res) {
  res.json(data);
});

app.listen(3000);

app.js

Demo - express

var express = require('express');
var app = express();

var data = {
  '001':{'name':'Jayson','ext':'#7540'},
  '002':{'name':'Test','ext':'#9999'}
  };

app.get('/api/:id', function (req, res) {
  var id = req.params.id;
  res.json(data[id]);
});

app.listen(3000);

app.js

Demo - gulp

> npm install gulp-gm

https://www.npmjs.com/package/gulp-gm

> npm install --global gulp

> npm install gulp

Demo - gulp

var gulp = require('gulp');
var gm = require('gulp-gm');

gulp.task('default', function() {

    gulp.src("src/**/*.{jpg,png,bmp}")
        .pipe(gm(function(gmfile) {
            return gmfile.resize(260, 260);
        }))
        .pipe(gulp.dest("dist/img"));
});

gulpfile.js

Demo - gulp

> gulp