(Male Narrator)…- There are two areas where heavy input/output takes place.…Network and disc access.…So let's take a look at disk access to begin with…by working with some files.…We'll start with reading files and then…move onto writing our own files.…In order to do that we're going to require…access to the file system that's built with the node.…But first let's start by creating a new file.…I'll call this demo.js.…Now let's require in the file system…and I'll call it fs for short.…
And as you can see, the library itself…is also called fs.…The next command we'll perform will be…to read from the file…but we don't have a file to read yet…so let's create a temporary JSON file…and put some data into it.…I'll call it data.json…and in here we'll simply create…an object that has a property name.…And we need to wrap the property in double quotes.…Then I'll use a colon and I'll use the…name Tim as a place holder.…
Let's close that out.…The first thing we'll do is access the file system…with a function called, read file.…(typing)…
Author
Updated
4/5/2019Released
11/7/2017- Asynchronous tasks and callbacks
- Benefits and features of JavaScript
- Managing third-party packages with npm
- Node.js frameworks
- Static serving with Express
- Creating a browser app
- Exploring databases
- Saving data to MongoDB with Mongoose
- Error handling and debugging
- Simple tests and async tests
Skill Level Beginner
Duration
Views
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Introduction
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Welcome41s
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1. Introduction to Node
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Download and install Node1m 28s
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2. Understanding npm: Node Package Manager
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Write your own module2m 18s
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3. Reading and Writing Files
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Read from files4m 31s
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Access directories1m 6s
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Write to a file2m 46s
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4. Exploring Web Frameworks
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Node.js frameworks1m 23s
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Express1m 6s
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Socket.io55s
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5. Building Your Demo App Chat Client for the Browser
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Static serving with Express5m 30s
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Create your browser app8m 43s
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Create your Socket.io event1m 59s
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6. Exploring Databases
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Types of data frameworks2m 2s
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Set up MongoDB1m 46s
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Mongoose2m 59s
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7. Improving Asynchronous Code
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Nested callbacks3m 27s
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Promises7m 14s
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Async/await2m 44s
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8. Error Handling and Debugging
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Try/catch2m 6s
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Finally1m 40s
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Editor debugging4m 14s
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9. Testing
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Simple test with Jasmine4m 33s
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Async test with Jasmine5m 33s
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Conclusion
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Next steps1m 24s
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Video: Read from files