Node.js Course

Node.js is a free, open source server framework that can run on various platforms (Windows, Linux, Unix, Mac OS X, etc.), and allows you to run JavaScript on the server. It uses asynchronous programming.
- In this course I add tutorials with the things I learn about Node JS from various resources I find on the internet.

What Can Node.js Do?

Node.js can generate dynamic page content.
It can create, open, read, write, delete, and close files on the server.
Node.js can collect form data.
It can add, delete, modify data in a database.

References:

- Node.js Full Documentation
- Pure JavaScript Client implementing the MySql protocol
- Node.js w3schools Tutorial

Daily Test with Code Example

HTML

CSS

JavaScript

PHP-MySQL

Which meta tag provides a short description of the page?

<meta name="description" content="70-160 characters that describes the content of the page" />

Which CSS property is used to stop the wrapping effect of the "float"?

clear text-align position

#some_id {
  clear: both;
}

Click on the method which gets an array with all the elements in the document that have a specified tag name.

getElementsByName() getElementById() getElementsByTagName()

var divs = document.getElementsByTagName("div");
var nr_divs = divs.length;
alert(nr_divs);

Indicate the PHP function which returns the number of elements in array.

is_[) count() strlen()

$arr =[7, 8, "abc", 10);
$nri = count($arr);
echo $nri;        // 4

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