Download Beginning Node.js by Basarat Syed PDF

By Basarat Syed

ISBN-10: 1484201876

ISBN-13: 9781484201879

ISBN-10: 1484201884

ISBN-13: 9781484201886

Beginning Node.js is your step by step advisor to studying all of the features of constructing maintainable Node.js purposes. you will discover how Node.js is targeted on developing high-performing, highly-scalable web pages, and the way effortless it really is to start. Many front-end devs on a regular basis paintings with HTML, CSS, Hypertext Preprocessor, even WordPress, yet have not but acquired begun with Node.js. This booklet explains every thing for you from a newbie point, allowing you to begin utilizing Node.js on your initiatives correct away.

Using this e-book you'll examine very important Node.js suggestions for server-side programming. you are going to commence with an easy-to-follow natural JavaScript primer, that you can bypass if you are convinced of your JS talents. you will then delve into Node.js options akin to streams and occasions, and the know-how considering development full-stack Node.js purposes. you will additionally easy methods to attempt your Node.js code, and set up your Node.js functions at the internet.

Node.js is a brilliant and straightforward platform to paintings with. it's light-weight, effortless to set up and deal with. you'll find how utilizing Node.js could be a enjoyable and profitable event - commence at the present time with Beginning Node.js.

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Sample text

This method of exception handling is great for synchronous JavaScript. However, it will not work under an async workflow. Listing 2-44 demonstrates this shortcoming. Listing 2-44. log('I am outside the try block'); The reason why it does not work is because at the point in time when the callback for setTimeout executes, we would already be outside the try/catch block. The setTimeout is going to call the function provided at a later point, and you can see that happen in this code sample since “I am outside the try block” is executed.

However, it will not work under an async workflow. Listing 2-44 demonstrates this shortcoming. Listing 2-44. log('I am outside the try block'); The reason why it does not work is because at the point in time when the callback for setTimeout executes, we would already be outside the try/catch block. The setTimeout is going to call the function provided at a later point, and you can see that happen in this code sample since “I am outside the try block” is executed. js is to exit the process, and this is why our application crashes.

Every object in JavaScript has an internal link to another object called the prototype. Before we look at creating traditional classes in JavaScript, let’s have a deeper look at prototype. bar reads the property bar from foo), JavaScript checks that this property exists on foo. __proto__ and so on till __proto__ itself is not present. If a value is found at any level, it is returned. Otherwise, JavaScript returns undefined (see Listing 2-38). Listing 2-38. bar); // 123 Although this works, the __ prefix in JavaScript is conventionally used for properties that should not be used by user code (in other words, private/internal implementation details).

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Beginning Node.js by Basarat Syed


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