New PDF release: Building Node Applications with MongoDB and Backbone: Rapid

February 14, 2018 | Javascript | By admin | 0 Comments

By Mike Wilson

ISBN-10: 1449337392

ISBN-13: 9781449337391

Construct an program from backend to browser with Node.js, and kick open the doorways to real-time occasion programming. With this hands-on e-book, you will tips on how to create a social community program just like LinkedIn and fb, yet with a real-time twist. and you may construct it with only one programming language: JavaScript. in case you are an skilled internet developer unusual with JavaScript, the book's first part introduces you to the project's center applied sciences: Node.js, Backbone.js, and the MongoDB information shop. you will then release into the undertaking - a hugely responsive, hugely scalable program - guided through transparent causes and plenty of code examples.

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Example text

When the mapReduce function is performed on the books collection, it is given three parameters: the user-defined map function, the user-defined reduce function, and the name of a new collection to contain the results. After the mapReduce function executes, it will save the author book counts into a new collection called bookoutput, which can then be queried just like any other collection. Example 4-9 concludes by querying it to reveal the number of books next to each author’s name. js is the Node MongoDB Native Project, a pure-JavaScript driver that provides asynchronous I/O to MongoDB from Node.

There isn’t a lot of functionality at this point; the server will respond to these events by echoing the users’ message back to them. To add a bit of life to this example I’ve included a reference to JavaScript’s setInterv al function with a callback who sends a random Three Stooges catch phrase to the connected client every 5 seconds. Express server is instantiated differently in Example 2-7 than it was in earlier examples. createServer(app) and the resulting server object listens for incoming connections.

Example 5-1. json file in the current directory. Since you have a package file, npm will determine which dependencies you have specified and will download the necessary versions. Web Server Many developers who come from a “traditional” server-based background are familiar with setting up web server software—whether it’s Apache, nginx, or IIS—to act as a communication channel between the web browser and the backend code. Newer tech‐ nologies such as Ruby on Rails, Play! 4 have mechanisms for booting a local “development” server so you can begin programming without being bogged down by implementation details.

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Building Node Applications with MongoDB and Backbone: Rapid Prototyping and Scalable Deployment by Mike Wilson


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