What Is A Web Page
What Is A Web Page?
A web page is how they are made available to the end user information on the World Wide Web of the Internet through a browser. A set of web pages, including their relationship in a hierarchy and a hypertext structure and report, as a rule, a single Web server, are a web site.
There are two types of web pages that identify respectively two different programming paradigms Web:
- Static web page identifying the so-called static Web;
- Dynamic web page that identifies the so-called dynamic Web;
In the first case the information with their description, are typically contained in hypertext in HTML or XHTML that let you access other web pages or other information content via hyperlinks (links or references). In the second case you use instead of scripting languages. Depending on the technology, the web pages can contain graphics or multimedia elements and interactive and dynamic.
URL
Usually a web page has one or more URLs (Universal Resource Locator), a permanent link that allows deep linking, sometimes has only a temporary URL that refers to an area cache. This is for instance the case when a page is the result of a zoom or movement for a map or a page may result due to some action. A page such as a page filled with a form, can not be accurately called a web page, as it is not the web but created by something that is on the web.
Graphics
The graphics file format on a Web page is usually JPEG or PNG and GIF images to other images (such as diagrams, drawings, charts, etc.).. The last two formats can be used for photos but they are not convenient for the purpose such as JPEG, which is a format to loss of information, while GIF and PNG are not. GIF is used for animations, GIF and PNG images with transparent pixels, PNG images with partially transparent pixels (even if Internet Explorer 6 does not support the transparency of PNG).
All these belong to raster graphics formats. The most common ways to use vector graphics in web pages are three:
- SVG using the modern (not yet supported by most browsers);
- Inserting PDF files, viewable with a plug-in browser or a separate program;
- Inserting Flash files, which allows the animation of the elements and the use of music and sound effects.
For example, to create a map, it may be a combination of levels in vector graphics and text, possibly with a level of raster graphics. This provides better results compared to Zoom in GIF or PNG (JPEG should lead to worse results due to artifacts of compression).
Create a web page
To create a static Web page, you need a generic web editor, or text directly in HTML view (or even a simple HTML converter allows you to do as, for example, Microsoft Word when you save a page or document), and an FTP program to upload the page to the web server that will host (hosting) a web page. You can also use the web browser to make the sending of web pages to the server, but it is not advisable.
You may also use a web template ready. The web templates are ready-made html pages already. The creators of web pages should include only the title and content. Furthermore, these models are reusable.
Wiki is a particular way to create or edit and send a web page without using an FTP program to upload the file and, filling only one form of text on a web page. The Wikipedia is an example of wiki technology.
To create a dynamic web page instead should know a scripting language for web programming, and use its editor.
The standards for web pages
From the technological point of view the various unique aspects of a page are created by using the following standards:
- HTML, that is the description language of Web documents;
- XHTML, which is an evolution of HTML, and is based on XML technology;
- Style sheets (CSS), which are used to monitor the submission of pages on different device types (text, graphics, printing, etc.).
- Scripting languages like JavaScript, PHP, ASP.NET, Python, etc. for dynamic web pages.
Save a Web page
When you save a local copy of a Web page, the browser typically allows the choice between:
- Save the text without any formatting or images without keeping the links and their destination;
- Save the HTML file without changes, but without pictures (save the source code);
- Save the HTML file by changing the relative links into absolute, without images;
- Also save images and correcting references to them, is if you create a separate folder (IE, Mozilla), or is the same one used by the HTML (Opera);
Internet Explorer can also save the page with images in a single MHT file, similar to Apple’s Safari, which allows the same operation by saving the page (animations and applets) in a web archive.
Most common Web browsers such as Mozilla, Mozilla Firefox and Internet Explorer, also allow you to print the page currently displayed and optionally “print” on a file that can later be viewed or printed.
For a page about another option is to save a snapshot of the screen (useful in some cases) links are displayed but not their destination.
Display a web page
Since most web pages consist of text, they can be viewed in any application that can read text documents. However, to see a web page in the true sense, we need a type of user agent software called web browser or better yet, a type of software designed to display web pages. There are different types of Web browsers available with different features and a large number of platforms. In the case of dynamic web pages the server or the client will develop the script (depending on whether the application is server-side or client-side) and then returning the HTML code used by the web browser to view the page on the user’s terminal.
Study: From Wikipedia, the free encyclopedia. The text is available under the Creative Commons.
